Don't go back to the old ones. Come up with new ones to give people what they seem to want without having it become a detriment to gameplay.

Obs/Exp led to scripts and forced things because people don't want to miss out. PK ones led to the occasional poor behavior by some players.

I think the Imms need to develop a new system to award edges without it being one driven as much by actions that players can farm.

There have been lots of interesting ideas put out there by players, though I guess implementation is the real problem. Some of the few I liked that people suggested:
- Old school wand system for EPS (certain tough mobs award EP for first kill, randomized at player location)
- Class based edge focuses
- hours age level related EP accrual
- PK related to AP charge system