As you can see, Karasakal's stream just ended. He spoke different times about how everyone agrees that the level system needs some changes, and he also said that the forum is the best way to talk about it.
First we need to acknowledge that every change brought to the level system would only affect the low level players, and for that reason I would reset the level somehow reminding people that a certain person had reached a certain level in the past, and then I would introduce something like a 1-100 level with ranks like the one we have now but better rewards and most importantly impossible to farm. When you reach the level 100 you have the eSper rank and you can start over as an S1, level 100, s2, level 100, s3, pretty much like the prestige system Call of Duty has (which btw the PM mentioned during the stream) up to level 1000.
I really believe it must be something hard to achieve because as of now there's way too many people that have reached max level, and that means that it's too easy to get it.
Do you have better ideas / thoughts about an eventual level system like this?