I agree that the IOC should allow mixed-citizenship teams to compete, but I doubt they'd ever consider it, because it would mean extending it to other duos -- synchronized duos, mixed curling, two-person bobsled -- and probably teams as well, like four-person bobsled, relays, etc.
ETA: Tobias' citizenship meant that the President was willing to grant an exception, essentially overriding the legislature, and IIRC, her reasoning was to allow the Lithuanian member of a team that had shown results, not potential, to compete. Tobias was only along for it to support the Lithuanian citizen. I don't know why the President would stick their neck out to offer Allison Reed citizenship, when she has a pattern of getting multiple passports in order to compete, which Tobias hadn't at the time, and, at least as far as I've read, hasn't made an attempt to learn the language or become part of a Lithuanian expat community.