You can already do this by mining at an auto-switching pool using Claymore. What would be useful is for Claymore to auto-switch POOLS based on profit, he can dream big and combine all his miners controlled by a separate program that looks at the pool API's and starts the appropriate miner.
Can you imagine hundreds of thousands of miners hitting that API?
Actually the miner itself wouldn't have to, HIS control program could query the API's, collate the results, and send commands to your control program, which would in turn start the appropriate miner and pool.