When I went through my second playthrough a constant problem I was having was the hotbar. Every time I picked something up it automatically added it to my hot bar, which would be fine if it didn't ignore the hotbar lock and fuck up my organization. I get that it's a necessary feature in the case of some spells such as hex or produce flame, but I would rather have those temporary icons be permanent. Then if I want to preserve my organization I can have them there but grayed out when they are unusable. It's a small thing, but it would've streamlined certain classes quite a bit in the minute-by-minute gameplay. Especially in combat this could be annoying since I'd have to go searching for where the icons popped up in all other mess that'd been added to my hotbar. I hope I'm not the only one who is having this issue.
