Me too.  But maybe something like this:

• no change to miners, they just getwork and hash like normal...
• lots of changes to pools, new patched bitcoind and namecoind, etc...
• pool sends out getworks that are 'compatible' between both chains
• if a miner sends a proof-of-work that is of at least Namecoin difficulty, the pool gets a Namecoin block
• if a miner sends a proof-of-work that is of at least Bitcoin difficulty, the pool gets a Namecoin block and a Bitcoin block

(assuming that Namecoin difficulty is below Bitcoin difficulty.    Parity here we come....)