Yeah they've been toying with the idea of a nova movie/series for a long ass time. I think I recall it being in the rumors since around the ultron era. I could be mistaken but most certainly it was well before infinity war got released.About time they got back around to Nova. There were rumors of a project with dude I think before Infinity War.
This. There had to be some sort of resistance. Thanos had the space stone, but that power stone on Xandar is what made him be able to destroy ships and planets. While they obviously lost the battle, they must have had a hell of a defense and just got overwhelmed.All I know is the series better start off showing how Thanos got their stone.