I've loved playing Skyrim, Oblivion and FO3, but I kind of wish you could maintain all your characters in some general pile and play multiple at once. Maybe only one would be the dragonborn or maybe not. Maybe you could only play one at a time, but trade items between them so that you could get the strength of a party.
I used to love that about Might and Magic and Wizardry. Maybe one of your PCs would always be primary and you could bring one along as a follower, but one you designed?