Interface
2c. That's utterly ridiculous. I don't want my game cycling my hard drive every 5 seconds, causing slowdowns. This game already has autosaves before most-all combat encounters. It's up to players to save regularly. If they're too dumb to forget to save, that's their own problem.
Graphics/Visuals
2a. If it was translucent it would be missing the point of letting you clearly see what is around your character.
Gameplay
7a. I don't see any alternative to stack splitting which wouldn't be more annoying. Most of the time you want a stack to go in all at once then place another stack on the other thing so you can make them in bulk. Just get over it and accept that sometimes you have to split stacks of the same item.