Should they? No. Will they? No. Are they legally allowed to? Probably not.
The movies don’t need to be remade from scratch, just improved (hence fanedits). Besides they would have to match in the broad strokes to align wit established canon, making them remakes rather than a reboot. It would also be basically giving George Lucas the finger, and given the trust he put in Kathleen Kennedy, I can’t see her doing that.