I like that map category idea. Since items won’t exist in the same way as most RPG maker games, it really only makes sense that common items should go into the first category. (And I could easily rename the categories too.)
As for ‘a you are here’ marker, It shouldn’t take too much effort, but I’m wondering if some players won’t prefer to figure it out by the labels. I’ll ask some more players and see what a good option is.