Thanks ijgordon!
I do agree that AS miles are among the most valuable and preferable to 'SkyPesos', and that flights on BA would accrue. I'd have strong preference for connecting through a European city than the US...from Seattle the flight distance is a lot shorter. I also have ~400,000 AS miles, so diversification might not be a bad thing. Right now AS miles are pretty good for going to Asia but much trickier to find availability to Europe (particularly with the high fees added at BA making it not a great option for redemption).
My thinking is the DL Diamond status would be a lot more valuable then AS MVP Gold 75.
Great point on the 75k per ticket cap! I wasn't aware of that. Our company is very large and has pretty good negotiated rates, do I'm not sure a single round-trip ticket would ever exceed $6-7k.