I voted man and machine, the reasons are on the other topic
Briefly, I dont think a 64bit sys is a must rigth now, but if it will be developed, I will try to help.
I do have a 64bit box, and you guys can use it. My knowledge about developing is poor, so my commitment is for testing.
Something to think about is, VL will need more people not just for developing, support, testing, packaging, they are in the list too. A special section in the forum, repo maintainers, ..., ...