It’s not worlds themselves, sir, it’s their… people.
I think just saying “countless [disparate] worlds” implies organized political actions rather than what the ‘civilian army’ we see at the end.
Star Wars crawls are fun when the grammar is treacherous. I like writing formally and with an archaic flourish when at all appropriate.
Hal for my own personal edit I would like to use this crawl or a variation as long as you don’t mind me using some of your ideas:
The legend of LUKE SKYWALKER has sparked A NEW HOPE across the galaxy. Countless planetary systems now rise up in defiance of the diabolical FIRST ORDER.
REY, the last chance for the survival of the Jedi, seeks to commune with heroes of the past, while Supreme Leader KYLO REN prepares to destroy the planet CORELLIA and with it all memories of his father.
Meanwhile THE RESISTANCE dispatches secret agents to gather intelligence, desperate to end this long war…