I doubt any public pool would work with 6 month mature time BUT release a getwork (or whatever protocol you like) miner that works with the wallet at release everyone can be his own private pool, not creating hundreds of connections since every wallet opens up 6-9
Just one wallet, as many miner as you like and off you go - i mean, do you really trust a pool to be around in 6 month? They can even run for just a few month and get away with a wallet full of unmatured block, wait up another 6, party on.
I really like the lottery idea and everything, the hashrate will be the same, either if everyone is mining solo or some pools provide it, it's maybe not as "fair" as pool mining but still, i really really like the concept.