That's exactly what we did after WW2. On one hand to clear our guilty conscience and on the other to move them far enough so it wouldn't ever become a european matter again. It worked a treat.
I agree with
@Raoul. Without the US nothing will ever change. The UNO is owned by the big five, the EU won't lift a finger, China doesn't care and Russia has other problems. The rest of the nations simply don't have any power nor leverage to do anything meaningful other than symbolic gestures. My german ex-wife was in the West Bank in 2015 and what she saw there was beyond belief. If one thought that the Apartheid was bad, they didn't see what's happening there on a daily basis. And that was 8 years ago, you can imagine how it's going right now with far-right government. And of course there's not a single peep about that in the western media.
I do agree with your last sentence and I firmly believe that it will happen in the course of the next 30-50 years.