+1

I think I'd rather see this as a priority over X13, especially since X13 will probably settle down to X11-ish rates by the time someone gets this completed.

I don't have a whole lot to contribute, but I'd throw 0.02BTC into a bounty for an NVIDIA miner with cudaMiner/ccMiner performance and true failover support.  I'd up it to 0.03BTC if it added X13 support with a reasonable level of performance.