I think flood in firefight would be a terrific idea it will give a feeling that your not the only thing thats being hunted by the covenant. Also with Gears of war 3 coming out the idea of the Lambent creatures being at the top of the food chain / the flood in halo. Also it would be neat to kill everything in firefight in the rounds then have all the bodies laying around then at the bonus round a whole -Yoink- load of flood infection forms come and infect the bodies to come and attack you NOW THAT IS SURVIVAL!
I used to hate the idea of flood in firefight. They simply don’t have the variety needed.
Then I played H2 campaign again…
As long as we have maps that can create that surrounded feeling, it could work.