The Librarian
Banned
IMO Halo 2 excelled with the story and opened up the universe in some much needed ways, but the actual level designs were a step back from CE. They were much more linear and down-scaled compared to CE, and I would have traded some graphical pizazz for more open levels. Half the Arbiter levels weren't all that fun IMO and the Brutes were a step back from the Elites. I've played through every Halo multiple times, but could only stomach one legendary play through of Halo 2.
Halo CE > Halo Reach > Halo 3 > ODST > Halo 2
Laregly agree with one notable exception: interior spaces. Halo 2 did interior combat much better than Halo: CE. Can anyone name a more awesome interior moment in Halo 1 than the brawl in the Mausoleum of the Arbiter in Halo 2?