Do you remember the XP runes?

Because I sure do, and they were definitely a great concept. Especially in the jungle, there were paths that were leading in getting level advantages with 1 or 2 quints and you could exploit things like superior pathing etc. Generally, it gave a lot of secret power.

I'd like something like this to be implemented into the rune system, probably in the inspiration tree. Being able to play around XP and generate more levels than the enemy could lead to some interesting dynamics.