Some reason why the Oglala should WANT Wounded Knee in 2014??
The only way that restoring the great plains states to the tribes would be meaningful would be for the bison herds to be reconstituted to their original millions, all fences on the plains torn down, all farming on the plains ceased, the raising of beef cattle in America ceased, the the tribes granted some sort of a monopoly for harvesting and selling bison meat.
The idea is not totally stupid. The really stupid thing in the picture was whites bringing European cattle here in the first place. Cattle have every sort of problem surviving in North America; bison have no such problems. A bison meat economy would be simpler and cheaper.
Have you looked into this?