The 2 state solution seems to be an increasingly hollow mantra from politicians who just desperately need to say something to show that have a vision for the regi on. The reality is that the 2 state solution has been talked about for decades and now is increasingly looking politically impossible. A 2 state solution obviously needs peace and given that Pal estinians have become wedded to a terrorist organisation that views torturing children in front of their parents as 'resisitance' and the Israelis understandably put their faith in governance that secures them against such horror peace is not to the fore currently and may never be.
The rebuilding of Gaza with a Hamas leadership would mean Israel governing the supply of construction materials and demanding to oversee individual projects. Estimates are that it would take 20 years to rebuild infrastructure (including water examination plants) but with external administration this period could become unrealistic entirely. The funding for the project would not come from the US but from gulf states who have so far has very little to say about investment.
someone mentioned voluntary movement of Gazans once allowed and I think we will see this if proper channels are made availbale. Many Palestinians do not see hope for their families in a benighted land and will look to make new lives. The remaining Palestnians would have to reconcile themselves with living relatively impoverished lives while the rebuilding occurs and we will have Hamas if not removed from power using a thirst for vengeance to recruit tens of thousands of men to essentially prepare for another strike against Israel to continue the so called 'resistance'.
It is again at this background I think many governments are becoming increasingly realistic about the possibility of peaceful co existence of Plestinians and Israelis even though it will not be stated publically (Maybe Trump is an exception as he is prone to to shouting what is said quietly). Governments may be spouting righteous statements at the moment but all are looking to have good relations with the U.S. And Israel so we have to see how the politics turns out in the long term.
The redesign of Gaza may take time and the exodus of Palestinians may take time but I think there may be increasingly regional acceptance that Gaza as it is isn't working at all and long term peace will only be a reality through a dispersal of people's many of whom have a deep seated ideological hatred of Israelis and Jews.
Peace occurred after the second world war due to the Germans and Japanese abandoning fascism and racial superiority as ideologies and the people actively seeking a better more prosperous world. Look at Germany and Japan now.
The big question is whether Palestinians can ever take that step or will they be for ever wedded to holocaust replicating manifesto of Hamas. The choice in my opinion is theirs.