Well I was thinking about that, I think that every dungeon would require at least one entrance, but not necessarily more. They could include a surface entrance or not. Everyone would have to include a common scale, which I guess (though it's a scale that bothers me to no end) would be 5 foot increments. Not sure it we should stick to a common pixel per increment or not, maybe Redrobes has requirements in that area, I imagine it would make things easier. I don't think there should be any size requirements for the dungeons, they could be as small as a single room or as large as a person wants. If there needs to be linking sections to make it work I'd volunteer to do them, but I'm sure we can find others also willing to do so.