One of the most requested "fixes" since the launch of the game has been to remove the utterly moronic adding of everything and anything you so much as glance at to your hot bar.
Yes there are work arounds and mods but no one should have to use a mod to just be able to use their first couple of hotbars, and recently the one I used no longer works and was removed from steam, the replacement I found on Nexus is also out of date.
This is one of the most frustrating things about this game, I setup my hotbars exactly how I want them and next thing I know I have to scroll another hotbar up to use the fly skill after I cast the flight spell on myself etc etc.
Set aside half a damn day, and please your current and future customers by getting one of the most requested fixes out of the way Larian.
Firing the person (it's not like they where coming up with winning ideas anyway) who came up with the wonderful feature to add everything to the hotbar would also be a nice bonus if you feel the need to go that extra mile.