So, I finally started playing TW: Warhammer 2 and the "mod problem" kinda solved itself for me.
SFO 2 simply would not let me start any campaign. Immediate crash to desktop, no matter which faction I chose. Alright, then...
Radious worked. After 5-7 turns I was swimming in so much money I was thinking "wtf is this nonsense". Easy mode? On to the next...
Lucky's Overhaul. Works fine, plays fine (so far), I dig the veterancy selections and the fact that battles last longer, giving you more time for fancy maneuvers. Off to a promising start. If that one would have failed, I'd just have gone vanilla.
Doing sieges as Skaven is pretty funny. Usually, with an early-game army, you wouldn't stand a chance against Dwarves. I sent my entire two armies of clanrats and a few stormvermin at the walls and by the end of the fight, I had lost 2000 units while the Dwarves had lost 120. Even Dwarven ranged units wouldn't go down to an assault of three units of (non-spear!) clanrats. If that isn't lore friendly, I don't know what is.
Thankfully, given enough food, you can "summon" obscene amounts of rats out of the tunnels anywhere on the map. So while my actual army was keeping busy dwarves at and on the walls, another summoned army of 10 units held the objective area long enough to win, as the Dwarves just didn't have the numbers to hold both objectives. And thankfully, it was stupid enough to try and hold the walls instead of the actually important area.