I am the leader of the Halo Machinima team TEAMHALOSWAT, or THS for short. Make sure to visit www.teamhaloswat.blogspot.com for THS news.
Halo 1 had no bosses, Halo 2 had 2 boss, and Halo 3 had 1 boss (sad, but a boss)
I think theyre should be 3 or 4 bosses
one of bosses (if theres Flood) should be Gravemind, in Halo 3 everyone wanted to fight Gravemind, everyone wanted to see Gravemind, now u would get both
another one should be a Drone Queen (saw this idea in another forum)
(if they add Brutes) another Tarturas like Brute Cheiftain, not like the Brute Cheiftains in Halo 3, they didnt seem like bosses
an Arbiter would be tight to be a boss
those are my ideas
[Edited on 06.22.2009 10:47 PM PDT]