No, I think WITH the merged channel lineup, they will DEFINITELY do the a la carte. I don't think they have a choice, with that being one of the BIGGEST pushes to the FCC.
BUT, it will be something like, ONLY Music, Music/Talk, Music/Talk/Sports or something more to that point... Now, it will all be very neat, instead of XM Music, XM Music/Sirius Music, XMM/SM/Sirius Talk, etc...