I want to do things in this order when it comes to postActiv:

1] Solve the initial rendering issues so that people can play with single notice formatting and familiarize with the engine at least
2] Implement postgres database support
3] Develop FederateFriendica and FederateDiaspora to iron over the federation issues that exist
4] Abstract and modularize the API code, and reimplement the existing API endpoint in a more sane fashion

Those 4 things alone should keep me busy for a while.