I think the signatures are fine, however, I would suggest leaving their distribution until people have actually been accepted.

Also, I dont think they should just start "anywhere" there should be a few minor islands for beginners where they find their transport and travel to a dedicated battle ground. the major battleground could be the centre island, which instead of being an impossible island of random environments could be a gladiator pit/s with virtually generated battlefields. I think that would make it more interesting and add the the theme of neo-feudalism (if you don't know what feudalism is I suggest looking it up).