Honestly, I have no idea what it is with Era but it's one of my favorite games.
I wish there was a way to get more people in, maybe advertise it?
Just right now, here's a few thought I come up with:
1. Reduce customs prices
2. Buff the jobs (Sounds like Speedy Pizza needs one, and Flower Job desperately needs one.)
3. Reduce item prices (A big one IMO, I grinded old Speedy Pizza for a head upload once, and even I get dissuade when I see those new high prices! I remember buying AP7, ACR, and Taurus back then, thinking 5-12k was a lot and wondering now "how did I ever afford those!"

)
4. Make it a bit easier for players to be involved with assisting the game (Sounds bad, but I'm talking about things like News, Arte, Graphics etc. Some new graphics designers would be nice!)
5. Tying in with the above, maybe add a poll system for new melees/guns/hats/heads where players can vote on what they feel belongs in Era, what its damage should be (with executive override of course! Too much OP potential), Graphic Designs they'd like (I really love the Abyss Fang!! It's sweet! but the other Halloween Melees I did not care for although that's just me, I'm picky.)
It's be nice for Toonslab to re-invest some of the money they earn on the game but I do not know anything about management, so that's just my thinking
I hope Era keeps on, it's a very unique and interesting game.