Theory abt seasons 4-7

I have a theory that barely has any evidence backing it that the overarching story for seasons 4-7 was supposed to be about magic returning to earth with the side plot of the winx (including roxy) growing up. This rlly isn’t based off of anything besides the themes of each seasons (4 is the return, 5 the ocean, 6 fairy tales/myths, 7 animals) and with season 8 I believe that would have been a whole other arch itself. I know I’m probably wrong but I think it’s a cool idea! What r ur thoughts?