Good points, my fav you mention is:
"It would be very nice to have the "De-Equip" removed, if temporaryly prerequisites for items are not given."
IMO there is something wrong with the design, when you get debuffs that take your attributes below the armors pre-req, imo in the name of fluid gameplay, these debuffs should be excluded from armor pre-req's. Annoying. Or at least, auto-requip.
