Posted by: Tupolev
Not really.
The flood were well-implimented in Halo 1, and had unique character in combat. They were also well-presented in the story in such a way that they were actually scary.
I like to see them done well, but I don't think Bungie has implimented them well ever since Halo CE.
In Halo 2, they feel tacked on in some places, and in Halo 3 fighting them makes combat pretty lethargic.
They're also not something that demands a lot of use; sometimes things are most awesome when only called upon when they're really needed for the storytelling.
I agree except I personally liked the flood in Halo 3. The fact that they could infect and mutate corpses, un-shielded enemies, and even your own marines right in front of your face. To me this made the flood seem alot creepier.
[Edited on 12.01.2010 2:40 PM PST]