Drizzle gets all the love right now. MySQL developers who aren't working on Drizzle might feel a little bit unloved. I don't want them to stop what they are doing and move over to Drizzle. I need them to keep on fixing bugs in 5.0 and getting 5.1 ready for GA. So lets share the love. Hug a MySQL developer and let them know you appreciate their hard work -- but only if they are not working on Drizzle.
And speaking of 5.1, what is the plan for releasing 5.1 plugins for Maria and Falcon? Given that the storage engine API supports plugins, the release of a storage engine doesn't require a new server release. InnoDB has already proven that by giving us a plugin that provides compression and fast DDL.