Hi
It's definitly lurking round the corner, I am very pleased with the way Trello is used, and I now have to update tasks on a daily bases based on user's votes, so please make use of this voting ability, this is the best way to properly reflect users' will and honour this in a fair way. So Rain is ranking pretty well, yet few more frameworks and tools will be ported before.
I would also contact Rain Authors to express your willingness to use Rain and PlayMaker together, it's always good that both sides know about this. Maybe some collaboration can be establish, and it's always good if a product supported officially playmaker then simply handled on the wiki as part of the community work. Personally, while a year ago I was on top, the amount of work to do on that front becomes overwhelming, it's really great, but also means that keeping the pace becomes impossible. Currently, I need to finish pathfinding, then I'll be able to start working on the next task, likely leanTween given the current votings.
Bye,
Jean