Rogue's powers wax and wane, as she has gone through several powersets. I wouldn't consider it a straight power-up, as some of her longest eras were...
The start of the Bronze Age is kind of like trying to figure out when rock 'n' roll started. Like the latter pre-1954, smidges of the BA were popping...
Change can change but it is a matter of maintaining order because otherwise chaos can destroy everything and something like a person's past, if it is...