If you are planning to nerf klepto pls remember that not all champs abuse it to gp/ez levels.
Alot of people are saying klepto is a support keystone. To some extent that may be right but from what the pick rate is saying is that champs that have a good late or mid game would take it to get to their spikes earlier. Some ranged top laners are using it against melee tops cause it is easy to proc but there has always been ranged>melee so this doesnt change much.
If a nerf was to come. (Which I think shouldnt because you are giving up late game power for early and mid game power.). It should be split into ranged/melee. Ranged lose 25 attack range bonus and it becomes a 4 second cd. Melee stays the same as current.
As for
's Q, have it count towards a ranged auto making klepto go on cd for 4 seconds instead of 2.
This change will make it give less gold overall to its ranged counterparts but still a good choice for those melee users that have a good mid game and want a bit more utility over raw stats.