Just saw the news about the subscriptions app, and by popular request I'm starting a discussion in here regarding in-app purchases.
I am not proposing, nor wishing, but merely mentioning that there might be a market for in-app purchases. I am running a martial arts website where club owners can register their clubs, and for them it would be a welcome addition to be able to promote their club even further. It's a functionality much like the yellow pages, only that when you want to recruit more members maybe you want your club to appear on top in searches for your martial arts style or in searches for clubs in your area. So that's one idea you could spin off on if you want to.
Something not to be underestimated also, is people's willingness to buy "gold" memberships, merely for the "gold". I have a friend who used to work at a company who specialized in gaming servers and gaming server infrastructure. Their website of course had stats of all the best players and so on, and players could also buy "gold" subscriptions to get a few extra (minimal!) features plus a gold badge next to their profile name. He said that it was really the badge that turned people on :) So if one could sell extra features or just sponsorship memberships, then that would be cool. I think (hope!) that plenty of our members would want to support us by buying a gold membership, just to give us support, and nothing else. So that's another idea for you, although the "freemium" idea is really nothing I can take credit for :)
Then of course you have events. Anahita currently has no event app I guess, but how awesome wouldn't it be to be able to let people set up their events and then charge admission fees directly through your Anahita powered website? So not a subscription pr se, but an in-app purchase. That would be a huge technical and administrative burden lifted off of non-technical users' shoulders.
All in all: No new ideas, just old ones that have been proven to work, and that might work in an adapted format on Anahita Social Engine, what do I know? #suggestions