Any ideas in the following "solution" that could work? I am sure there are problems with it, but it contains a general approach I have not seen suggested: If a

Any ideas in the following "solution" that could work? I am sure there are problems with it, but it contains a general approach I have not seen suggested: If a miner wants to be part of a pool they must publish their participation in that pool (signed with their private sig) prior to the next block being worked on (or longer if deemed necessary, we are still talking minutes). They can only change pools once a day. Anyone in the pool solving the block will result in the block chain dividing the winnings among the pool. Then there is a rule that no pool can win more than once a day (or some other time limit). This allows small miners to pool together to reduce their risk, while incentivizing pools to stay under a certain percentage of computing power as going over that would actually decrease their expected returns. Small miners get the complete advantage of reduced risk, while large miners are incentivized to stay under a limit. This may not be a foolproof solution, but perhaps it contains elements useful to a solution.