Honestly, I don't think justice for Palestinians is likely. As I see it, peace is inevitable but moderately far at the pace we're going, but justice would require a perceived violation of Israel's integrity that Palestinians will never have the bargaining power to demand. It'd be throwing a wrench into a peace process that will likely be reluctant and fragile already. Justice would be nice to have as an addon, but Palestinians will likely choose to take the fastest route towards human rights, which will be a two-state solution where Palestinians make some concessions but gain a state with real sovereignty. If something drastically changes justice might become possible, but in my thinking it'll be Palestinians, not Israelis, making concessions to make peace possible a la the Oslo Accords.