A while back it looks like batch_size and no_timeout support were ALMOST completed, but not quite end to end.

I don't have time right now to write proper tests and make pull requests, but for now, here are some commits that fix the issues:
https://github.com/mschulkind/moped/commit/9564822760f0874eae634f0e3250b6cc1b6c941d
https://github.com/mschulkind/mongoid/commit/05c02e10ee5aafdd5896fa3a15cf75ea920079c2

Arguably, the timeout=false option in origin/optional should really be no_timeout=true, but I didn't want to change too much...