We should have our current GPUs mining the most profitable alt coin and either converting it straight back to Bitcoin or keeping it in that altcoin (in case they rise a la the last rise)
GPUs mining Bitcoin is already a waste of electricity.
EDIT:
nvm we don't even own any GPUs.
If you can start snagging 7970's off ebay (I've seen some go for $300), I think that'd be pretty profitable.
or reprogramming those FPGAs