Palestinians who are not part of Hamas are third parties and when they are attacked, you can't tell them to ask Hamas to release hostages or do anything, because they have no more influence over Hamas than anybody else does.
Christian population is going down in Palestine, and up in Israel
In fact, so far as I know (I only know the Levant) there are no growing minorities in any Levant country, other than in Israel.
>In 2007, the year Hamas took over Gaza, the Gazan Christian population was at 3,000.[5][33] Israel's subsequent blockade of the territory accelerated the emigration of Christians, with many going to the West Bank, the United States, Canada, or elsewhere in the Arab world.[5]
I think they don't. I think it's as states, that they either emigrate to the West Bank or go far abroad.'
There are extreme efforts in Israel to push Christians out of certain neighbourhoods, for example, in Jerusalem, where people have been going after the Armenians.