"Caboose, provide cover fire with that tank !"
"Okai !"
"And don't shoot me this time."
"Okay !"
-Blam-
"Son of a -blam!- !"
"Wait, what was the first part again ?"
I think the Flood would make gameplay extremely hard and make no sense. First of all the Flood don't know where Earth is until the Floodgate in Halo 3. Second, have any ingnorant Flood lovers realized that you are human ? Master Chief as a full set of MJONLR armor plus energy shields. Chief is also faster, and can at least run from the Flood. The ODST's got nothing, but kelvar suits (I think) which the Flood can easily pentrate. And the ODST are going to be slow as -blam!- when running from Combat or Infection forms. Click here to see what you would look like against the Flood as an ODST. (Oh this movie has to be done on Xbox, Halo 3 Theater, you can't moke around in render). Follow the instructions in the description and you should see something that may look like you after the 50th time you've been killed by your make-believe Flood in ODST.
I also heard a ridiculous idea of pressing a button quickly to pull the Flood off before it infects you (Sort of like CoD 4's attack dogs), but think about it. So you pull it off and throw it away. you haven't killed it (You can't pop it, your not as strong as chief). It still can infect you with it's 1000 other friends who form waves of infections forms for you to surf on (not really).
For Flood lovers, THERE IS NO -blam!- HOPE OF YOUR STUPID IDEAS. Flood is never gonna make it to ODST for stated reasons above.
I definately agree with the topic and it's creator. It's too early first of all, and second the Flood would kill you every 5 seconds on Easy. It would be like Dead Space, instead like 79x harder. Case Closed.
Shot down your dreams, have a nice day !
[Edited on 06.02.2009 2:52 PM PDT]