Klepto rework to make it far more healthy/less abusable.
Current Klepto is a 0 CD Spellblade effect. This makes it have powerful abuse cases (anyone with an auto attack replacer on a low cooldown, such as Fiora's Q, GP's Q, Nasus's Q, or Illaoi's W for top lane examples, or Ezreal's Q for bot lane).
Why not just rework it into an Energized effect? This both gives it counterplay (Cooldown sets itself up and can be consumed on minions to no benefit fairly often in laning phase), equalizes it's use cases (Doesn't give most champions much of an advantage to using it compared to many others, it's pretty much normalized among everyone. Higher AS champs may just faintly end up stronger with it, or GP just because his Q is faintly better at proccing it than most melees, but he still has to plan around it rather than just pressing Q on cooldown on the enemy laner), and with it being far more normalized among champions, you don't have to worry about it being polarizing when used by a few champions (pretty much just the 5 I mentioned... I can't think of any other Klepto users/abusers anyway), but worthless on anyone else who can't abuse it.