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.
I can even imagine that the gloves won't appear in the final game so early and that they were positioned on purpose in the EA version in order to give people easy means to play around with teleport.
