I have a hunch Bautista will go to the mattresses if they try to force him to do it without Gunn. The rest will be there though.
But yes, I standby the Guardians films are among the only Marvel Studios movies with any sense of heart or depth of feeling (the other being Black Panther), and I think they're the most heartfelt and earnest, which is all the more rewarding given their flippant and smug demeanor. Each of them is so deeply hurt and flawed, it makes them feel more real and heroic than the generally pretty perfect Avengers roster (at least post-Phase 1). Another way to put that, they were the only ones I was sad to see die at the end of Infinity War, even though I know they are all coming back.
EDIT: Watch this ending and don't tell me that it is not unique for the MCU... or that it is fitting of what kind of has happened to the franchise in a bittersweetly serendipitous way:
https://www.youtube.com/watch?v=FULRdn9khmM&frags=pl,wn