Even more so than with Endgame, this is the first Marvel thing to me that's actually feeling like an ENDING. The Guardians have been the heart (and the main draw) of this universe to me since 2014, and I can't wait to see how their story concludes. I know it's going to wreck me.
Also, can I just say how much I adore those Skittles-colored space suits they're wearing when out in zero-g? That's just straight up 50s pulp sci-fi stuff right there and it's so directly up my alley. Love it.