I was on the fence about it for a long time, mostly because I intensely hate Spider-Man and loathed to see him on the team. Hickman makes up for it though in The Room: 'unexpected, the Spider Man also possesses a formidable intellect'.
--The invitations to the Destroy Reed Symposium.
--The alternate Reeds, the last four of which I nicknamed Techy, Bluey, Whitey and Wheels--to keep them straight
--Nick Dragotta's art
--The Ben/Reed/Doom/Nathaniel sidetrip to hunt down Other!Nathaniel.
--Namor killing the crap out of Old Atlanteans.
--Bentley 23 and everything he does
--Ronan and the Kree. Because the Kree are pretty cool anywhere they go.
--'Here I can build.' Oh yes
--Valeria's handshake with Doom. A long way from the days of 'Unthinkable'.
--Sue telling Nathaniel where he can stick his future-knowledge
--Johnny saying in 'Three' that he wanted kids. Weird.
--Techy and Whitey's repurposing into the new Supremor. I expected more of these alternate Reeds.
--Nathaniel. Just shut up, yeah?
--Nu-World. For those of us that can't stand Hitchy's art and didn't read Millar's run, this was weird and dumb. But whatever.
And I'm still trying to figure out that flashback or whatever in 'Three' that shows Doom, Reed and what appears to be John Byrne circa 1986 all strapped to a table with Kirby dots all around. Was this from the Intelligencia stuff?