IMO gloves of teleportation is an extremly strong item since you get them so early in the game and you dont even need a point in a aerotheurge to use them so all characters can use them, sure you can find a teleportation skillbook, but that is later in the game via NPC merchant or fort joy, and a way to maybe fix this is to have X-number of uses on the gloves like the wands with source vampirism have since its an early game item.
that being said, i still love the gloves thought even if they are really powerful, but maybe that was the intension since you need it in a quest and its useful in puzzles.
