OK, since you seem to always fly paid premium cabin fares, there are some great FFPs out there for you. Now... how do you feel about having to connect through hub cities to get to you final destinations?

Off hand, it seems like you could do very well with a BA account and/or a LH account. Can you give us an estimate of how many flight miles you usually log in during a normal calendar year?

Bottom line is... if you are a F fare purchasor, then you are well off just getting one ff account from one carrier of each of the major alliances and concentrating all your alliance flights on one single program. Then, you just elect your flight patterns according to your preference/convenience.

You seem to be fixated on Delta, and there you have SkyTeam. One down, two to go. I would get a StarAlliance account, there M&More from LH would be my choice. Finally, get a BA account to cover OneWorld. That should be about it...