"Excuse me if this has been posted before but I've never seen a topic regarding this and feel if it hasn't been brought up it needs to be. It seems so obvious as to almost be absurd, but since a fix hasn't been implemented yet I feel this bears addressing.
Simply put, there needs to be another hotkey button added to bring the total available hotkeys (excluding the dedicated potion hotkeys, including L and R mouse buttons) to seven. Why? The Wizard passive skill "Virtuoso." If you take this passive skill (which I was hoping to) you will need one of your mouse buttons for your REGULAR wand attack PLUS six other hotkeys for your slot-able skills. Removing the potion from a hotkey is potentially suicidal when the game difficulty ramps up so another assignable hotkey is the only option. Perhaps, in order to avoid making other classes angry at having a blank spare hotkey, it could be a UI option (enable extra hotkey?).
Hopefully this has already been addressed or will be addressed after this post. I appreciate very much any feedback or assurance that this quirk has not gone unnoticed."
Someone in the original thread suggested that the "hidden" cost of running with Virtuoso was not being able to hotkey every skill you have slotted. I don't think that is the case, rather I think this was probably oversight as no class really has use for their basic attack after a few levels. The Wizard is (as far as I can tell) the only class that, through a passive skill, would have a use for their basic attack.