Remasters are probably the preferred versions, this is officially the first time these games got translated and released in the
west. You could probably find ROMS and find an English patch(I know ones exist for ROmancing the SaGa 3 since I’ve played that) and I think there’s added content to RtS:3 remake, so there’s that.
Hope so. Against all expectations, my phone has become my preferred way to play RPGs. It's still not good for action games and never will be, but perfect for anything that doesn't require quick button presses.