Jumped in for a match of Halo 2 to get the visual flair, hopped out immediately. The game hasn't aged well at all.
Just some of the changes I cant go back on:
Battle Rifle is the finger of God. If someone points it at you, you die. Hitscan sucks, Im a little worried about how they're going to deal with its return in Reach.
Dual-wielding destroys the shoot/grenade/melee trifecta. It doesn't help that grenades dont feel very powerful and melee's have a wild lunge to take into account. With dual-wieldable weapons all over every map, every match is just a spray-and-pray cluster.
Equipment adds so much variability to the combat, so many tactical wrinkles that completely reshape the dynamics of a skirmish in one fell swoop.
Valhalla > Coagulation
That said, damn I miss some of these maps! Headlong, Relic, Terminal and Containment are ****ing brilliant.