My concern has been that there's a few missing features in rethinkdb - I want to be able to resume query after a client gets disconnected without re-downloading the result set. (If the data hasn't changed) and I want deeper integration with rethinkdb's versioning system. But I've been too nervous about making those changes myself and build on top of rethinkdb because of license taint. Now this has all been solved. Its starting to look like a good time to crack open the code and submit some patches! Thanks everyone who's made this happen!