Youme is also making an expansion pack typea thing with 19 chambers. He maps out 5-6 maps at a time, and has a few people beta test. That way the entire community doesn't get to see the maps, so the final release will still be a surprise for most people, but he still gets to receive feedback on possible bugs / solutions you may have not been aware of.
This seems like the best solution for wanting to keep it a surprise for the community, while not totally neglecting testing. No matter how much you test it yourself, you're bound to miss something, everybody thinks differently. I'd recommend having at least 3 people beta test the maps along with your own testing before you release all 19.
I do agree, 2 maps is barely worth releasing to anybody, even for beta testing. I'd say at least 4 would be needed, but no more than 6 at a time.
Anyway, just suggestions, take em or leave em. And at any rate, looking forward to any release at all!
PS: I'd be willing to beta-test. I've beta-tested for youme... I'm sure he'll vouch that I'm a pretty good tester 