Rocket Racoon is still alive. Obviously.

Groot will regrow from Thor's ax handle, which you'll notice didn't turn to dust.

Nebula will take over Gamora's role.

Kraglin will have a more prominent part and will have mastered Yondu's arrow.

Rocky Balboa will be in on the team.

It will be revealed that Drax's wife was alive all along. It will also be revealed that she's even buffer than he is (or rather, was).

Nova joins the team.

Adam Warlock starts off bad,but then joins the team.

Boom. You manage to still have a Guardians of the Galaxy in spite of the majority of the characters apparently dying in Infinity War.

Or you can just bring them all back from the dead. That works, too.