There needs to be something for money. Something to control the economy in the game. By the time the game closed standard wealth was in the billions with absolutely nothing to do with it. There needs to be something to maintain this to keep it under control. Things like;
Another range of enhancements Branching beyond SO, to something of old Hamidon Origin (+50% to 2 stats)
Purchasing double slots for your character(making power slots have double effectiveness) Charge 50 million or whatever, but it's going to maintain the economy better.
Casino-mini games
Influence currency instead of SG currency for base creation.
There's plenty to do.