I think i might have found the solution for the ALT key showing too much.
- ALT key should highlight items only acording to perception skill of the character. -
This would require items to be grouped into perception relevant groups.
For example these important keys would require higher perception, say 8 or 9, for example.
(the devs can then adjust different items relatively easily)
In the game it would mean ALT key highlights the usual loot for ease of use - but you dont see that very important or quest relevant key just like that - so easily.
Instead - you see it when your character perception is high enough - which is intuitively understandable and naturally acceptable to everyone. I would think. Since its in line with common sense - and general RPG kind of gameplay.
The player who invest in Perception gain a very nice reward for it this way. Those who dont - get to do a little bit of pixel hunting - help from the players themselves, but are better at some other things.