Oh... Dinnerbone says Name Tags will be a reward... So generated in chests... Meaning you can't craft like 500 and name everything in your farm... Damn it...
WELL I do have something to say. Beacons work while under carpets. You'll still need a path to sky above it, but since you can also put carpet on glowstone and even glass panes...
Edit: With my cauldron design, I realized I could replace the two quarts blocks the redstone is on with more droppers. After the initial placement, they only activate when empty as well. So you can put 27 buckets on water into this system if you feel stupid and it should keep it stocked. I think it might be more reliable with just two droppers, though. Noticed some oddness with it.