It will never happen, for one of two reasons:

- Potencies remain the same when synced: "high level players do so much more damage with all their abilities, no one wants to run with me as a low level character because I make runs slow in roulettes"
- Potencies are scaled down when synced: "I have to put in so much more effort to do the same amount of damage as a low level character, I'm being punished for being high level"

It's a lose-lose situation.