Please don’t mess with Alps. They were absolutely horrendous for so long and now they can still be a threat if you mess up.
Also they are not intended to be late-game enemies.
I also don’t mind that Geists get shredded by whips. It was always very frustrating if your 60 resolve guy gets feared and your banner fails rally.
3-headed flail I kinda like, at least more than a regular flail. At least they are somewhat consistent but I still rate flails the lowest tier of weapon once you start facing raiders with helmets.
For 12-14 I don’t know what exactly the problem is with the way things are now – the rest of your suggestions I do approve.