I think satoshi never really thought or wanted pools. He wanted the client to mine. I think you should mine at 1,000 per block for 2 weeks, then end the mining or at 1 per block, with a 10% sales tax which is destroyed.
First of all mining/hashing can NEVER END or the block chain ends.
If you mean end block rewards, you do realize there isn't sufficient transaction volume to support hashing network right now without block rewards. Current fees are ~1% of block rewards. Thus if all block rewards ended tomorrow network hashing power would fall to 1% of current. It is simply supply and demand. The cost to produce a block would need to be 1% of current cost and that would require 1% the difficulty and thus 1% the hashing power.
That would put global hashing power for bitcoin at ~12GH/s. A trivial task for someone to 51% and double spend.
Satoshi was very smart w/ concept of block rewards. They distribute wealth and at the same time create a subsidy to keep network functioning and secure until such time that transaction volume can support the network without subsidies.
Bock rewards/subsidies are a solution to the dilema of:
a) how do you pay for a large/secure network if transaction volume if low?
b) if network is small/weak how will people trust it enough for transaction volume every grow?