I can't even wrap my head around how this is going to work. Other then it being super derivative, predictable in its plot and end game. Either they take the fight to the aliens even though
that power is gone pretty much
. The Aliens come back to kill humans with a bigger force and we repeat things. Or someone gets a hold of this ability and starts to fuck around but that would be fairly uninteresting.
Plus it would have very little or next to zero context to the source material at that point.
Rita was an actual God in the book though as in the MC is a complete an utter scrub and in the grand scheme of things remains so, but she is ridiculous.
Premise is really cool and could have couple of more movies based on that. Make it and spin off, reboot, sequel, prequel, whatever, the first one wont stop existing or being good. Just hope it is not Highlander 2 levels of trash.