Well I don’t really know how; the point has passed in which Rey might have become someone interesting. Why sit through the stupidity of part IX just to see if a miracle happens in part X? I’ll have to pass.
Plenty of people enjoy 4-6 despite 1-3 being garbage, do they not? All it takes is a good film, good story. In that, Rey could be a key player, a bit part, or even long dead in a future story. Post-TROS is a vast amount of time.