I agree. I have no problem with the reservations being held as some kind of tribal trust or corporation, I don't even care about the tax issue, or the gambling issue, it is the fictional sovereignty that concerns me. That needs to be dealt with and done away with.
The situation of each tribe should be examined fairly, and if any further reparations need to be paid, fine, although I doubt that it should be necessary, or if so in what form. We have treaty obligations but these should simply be bought out and disposed of, as you suggest.