From your shitty english I decipher these main points: Monsters hit too hard and you can't do anything against it as melee.
My main assumption at this point is that your builds simply suck and you're playing the "true ethical melee"
Yes, POE had melee in 1.0 version. Back then your only way to defend against mobs was just your lifepool and your main defense + someblock. Back then GGG thanks to small amount of mechanics could properly balance game around it.
The critique here isn't really about 1HKO problem it is how certain mechanics force designers to play loose game and in the end they killed melee, removed completely single target gameplay. 1HKO issue is really just outcome of those mechanics involved.
Now I will grant you that sometimes the planets will align and you are going to encounter a situation that will kill you.
The planets alignment happen way to more times that i would like. I don't have problem with getting killed because i made mistake or i play wrong. I have problem when it feels like completely random deaths because like you said planets aligned and that 1hko went throu all my defenses unblocked and there isn't single thing i can do to build around such cases.
For an example. Why normal mobs in POE do so much more damage than in any other ARPG say compared to diablo ? And i don't mean juiced rare with triple ele. I mean common white mob without ANY juicing. Because players are expected to fight ranged which means don't get hit at all while "melee" is in the name only, just spells with STR requirement. So when mob finally will be able to get close to you it needs to dish out so much damage that you feel threatened. So occasionally you can die. Game is i repeat designed around not getting hit. Which automatically means glass cannons who clear whole screens are the best form of defense. Then there are your layers of defense, then life and at the end your main defense.
Now take Grim Dawn, D2 and pretty much any other ARPG. You can walk into pack of monsters as melee character and expect to walk out of it. Not because you won't get hit (you will !!) but because dying to such situation is mostly based around judgement and how much you can handle at the moment. There is also some leeway when you are in deep shit because health doesn't go down from 100% to 0% in 0.2 second, even at 30% you still feel like you have some buffer before you die. That is because those games are designed around you getting hit. Which means monsters can't deal obscene damage because you would be dying every 30 seconds.
BTW if you think that Hard Mode will make you die LESS, you misunderstood the marketing completely. I suggest you try out the Endless Delve event (still available for the entire week) for the first couple of nodes. THAT is what Hard Mode is going to feel more like.
I think you are the one who misunderstood both me and what hard mode tries to do.
First of i didn't say i will die less in hard mode. I said that hard mode will force designers to look hard at core mechanics and what they do. Visibility in combat, how much health you really need and how to scale it, primary defenses what they do and how they work. Like i said i don't have problem with dying i have a problem when i die randomly with no avenue to correct or get better. If i die because some telegraphed hit hits me i am fine with dying, i am not fine when i can't even see what hit me in first place.
Hard mode is not endless delve where difficulty comes from ever increasing stats of monsters. It is mode that will remove almost all mechanics that you got used to like crafting, easily obtainable gems, wealth of loot, masters, piniatas and so on distilling game to core of what POE is. Chris openly stated as this will be used as test mode for ideas they have to safely test them before bunch of whiners on reddit who only understand "more is better". With this they can have hard look on why for example melee doesn't exist in POE, how their primary defenses are shit, mob density, clarity etc.
The other issue that came up over the years is that loot became shit. That is also the problem they will be trying to deal with in hard mode.