The 'immobility' of armour has been greatly exagerrated in popular culture to build a "tank vs ninja" false dichtomy. 9/10 lack of armour was a cost issue not a deliberate "oh we can move and bend slightly faster without it" choice.
Yep.
Big no to chainmail bikini and barbarians wearing a lot of leather BDSM gear straps.
This shit would be worse than actually fighting naked. Not only it would chafe like fuck, but anyone entertaining any illusion regarding this kind of stuff providing at least partial protection is welcome to take a stroll through the woods off the beaten path (preferably in summer) - once in sandals, once barefoot. They will quickly discover how good loosely spaced straps are at redirecting and guiding sharp objects that would otherwise glance mostly harmlessly off right into their flesh.
Straps are only worth it for actually carrying stuff, if the benefit outweighs the risk.
Yeah, sure. But if you really want to include chainmail bikinis, you can justify it in a "I don't wear it for protection but for style and to show how badass I am, baby" way. It being even more impractical than full nudity can make it an even bolder statement, or it can be a cultural thing, or it can be considered a piece of jewelry rather than proper armor, and it's enchanted... etc etc. Yeah, it wouldn't be the most logical thing in the setting, but it
can be justified if you really want to.
Also, I'm only talking about the traditional classic pulp barbarian outfit: loincloth and boots for the guy, chainmail bikini for the girl. No leather straps or any of that crap. Basically these two:
I'd be willing to accept a cute chainmail bikini because it's
- sexy
- doesn't add that much weight to your body to be massively impractical
But those weird JRPG armors with all the leather straps everywhere? Yeah, no. Those are retarded. Not gonna defend that shit.
Also, fun fact: I once came up with a quest idea that would parody the chainmail bikini. If you're playing a female character, some guy will offer you a role as an Amazon warrioress in that theatre play he wrote. Your costume: a chainmail bikini.
You can actually pick "Amazon warrioress" as one of your character's origins, so if you come from that culture you can tell him that nobody wears shit like this. But he'll still insist you put it on for the role since that's what the audience expects.
It's much easier to justify actual nudity than softporn armour - after all fighting in the nude did happen historically, and it would be more prevalent if it actually worked:
- Perhaps woad or magical tattoos confer some powers only to warriors who otherwise fight naked?
- Perhaps you really win divine favour by demonstrating how much fuck you do not give?
- Perhaps any magic you channel doesn't play well with any sort of clothes apart from small pieces of ritual jewelry? (so you'd only wear something you could quickly cast away)
- Perhaps you wield shapeshifting magic that would end badly (to you or your garb) if used with constraining, not easily discardable attire like suit of armour?
- Perhaps magic can reshape or otherwise affect all matter around caster unselectively? A caster can open a tunnel through a stone wall but will tear anything they wear into shreds in the process or set fire to the enemies but also any piece of clothing touching their body? Lightning and metal anyone?
Note that you can justify a lot of stuff this way: if a character relies on channeling earth magic they might need to fight barefoot.
Overall, your list of ideas is very good at making unarmored (or completely naked) characters viable by providing a good reason for not wearing armor that isn't just the typical retarded "armor reduces your dex hurr durr" based on misconceptions about armor's heaviness. Magical tattoos are a cool idea (especially if they're permanent, you only have a limited amount of skin real estate on your body, so choosing which tattoos to get is a permanent irreversible character choice - they can't be switched around like equipment), maybe their magic is solar-powered and they don't work when you cover them up or something. Clothing and armor interfering with spellcasting, yep, even D&D already did that. Shapeshifting ripping your clothes apart is a thing I'd like to see in settings that allow for shapeshifting, just to cause butthurt in players who just accidentally lost their Epic Spellcasting Robe + 5 because they assumed clothes would just vanish into the ether (??) when you shapeshift into a thing that's several degrees larger than you, and reappear unharmed when you shift back. Sorry bro that's not how it works, say goodbye to your Epic Spellcasting Robe +5 and say hello to tiny little cloth shreds +5.
And, of course, it can always be a cultural thing and tied to roleplaying a certain character. Single player RPGs don't need to be balanced. Not every option and not every character type needs to be equally effective. Maybe the only thing fighting naked and believing the gods protect you does is increase your morale, but when it comes to actual protection, you're vastly outclassed by anyone who's wearing a simple chainmail shirt. That would make "naked barbarian playthrough" a nice challenge for experienced players who'll willingly gimp themselves to roleplay this particular character type. In a system with advantages and disadvantages, Daggerfall style, there could be a "nudist" feat that lowers your character's morale whenever restrictive clothing or armor is worn, and increases it whenever you're naked. It also bestows some additional skill points on you to compensate for the fact that you'll never be able to wear armor effectively, or even enchanted clothing (and such a feat would further add validity to the character, rather than making it a simple LARP of "I am barbarian so I fight bare-chested" without any mechanical necessity for it).
Roman legions at most points in history would only wear one greave, for example (on the forward-facing leg), for weight reduction and equipment cost reduction.
I doubt this one. Unequal weight distribution between legs would likely fuck them up something fierce during long marches. Asymmetrical arm and body armour? Absolutely yes.
Single greaves
are attested in several graves of soldiers as well as contemporary depictions.
It is
also mentioned by various mostly reliable authors:
Note that while it is assumed the single greave was given up later on for the sake of increased mobility, it was in use for quite a while and part of the standard government-issued Roman military equipment.
In the context of an RPG where the player assembles his own equipment, the weight difference between the two legs if one leg wears a heavy greave but the other is only clad in a light sandal could incur a small DEX penalty - which would actually make sense in this case, unlike the huge DEX penalty usually added to suits of plate armor. Maybe the devs can even come up with a nice little formula that calculates the DEX penalty based on the actual weight difference between the two legs (so one thick leather boot + one steel greave is less bad than one bare foot + one steel greave, because the difference in weight between the two legs would be greater in the second case).