It seems that very few people realize that you can do an internal transfer between the Starwood accounts for spouses. It really doesn't matter where you leave them. You can just leave them in the original cardholders account until you see how you need them. If it is the spouse's account that needs miles, you do an internal transfer, then a transfer into the FF account. If you transfer 20K, you get a 5K bonus. If you just want to top off an account, then you transfer what you need with some minimum increments - I forget how much since I usually transfer 20K at a time. This helped me achieve my lifetime platinum status. I think this internal transfer feature is one of the best feature of the starwood program.
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Ms.DtG