I like Hickman's team fine, but if I were doing my own version with 18 character's I'd do something like this:
Falcon - out- always found him boring. Replace him with the Vision.
Manifold - out- Adam Warlock. He can teleport, plus he brings space magic to the team.
Cannonball- out. Lame. lets use Mantis, the sexy green one, has telepathy and kung fu and cosmic knowledge.
Sunspot- lame- but, okay let's put another mutant on the team. How about Firestar? When was the last time she did anything interesting? She has a sexy look, and simple, straight forward powerset.
Smasher- Out- And in goes Iceman. Another mutant, and it's been ages since he's been on anything cool.
Captain Universe- Okay, let's try Blue Marvel. Why not. A guy with this much power sitting on his ass? It doesn't sit well with me. Let's get him off his duff. And put his science skills to use as well.
Hyperion- Power Princess/Zarda. If she's available, I'd rather have a Wonder Woman expy than a Superman expy. I'd make her fly though.
Edit: New concept. Dumped Magik when I realized Adam Warlock can teleport. Always loved Adam Warlock. And threw in Iceman. So we get a little Guardians of the Galaxy vibe going, plus a little "Spider-Man and his Amazing friends Vibe" going here. Plus a Wonder Woman expy. So, this team works for me. Completely different from Hickman's but that's cool with me.