My face when I found out that Infection was in a nutshell going to be the Infection we’ve played in H3 and Reach: 
My face when you did a Bulletin on it: :((((((((
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Actually I think I need a few more frowns on that: :(((((((((((((((((((((((
…
There we go.
Why am I so unhappy? Because H3’s and Reach’s Infection was incredibly flawed, incredibly unbalanced and incredibly unfun to play. Overall the gameplay can be described as playing Duck Hunt and/or shooting fish in a barrel.
Being a Zombie in Reach, and certain Gametypes in H3, was a slow deathmarch of a slog towards game completion. More likely than not, Zombie would “win” the round by killing all the Humans. But that “win” is basically dropped into the one Porta-Potty at an all you can eat chili cookoff because of how many times you’ve had to die to achieve it. Coupled with the fact that the Humans still win because everyone is ranked by their individual kill count anyways.
So what if Zombies killed the last Human and won the round? He was only killable because he finally ran out of ammo and came out of his camping spot. And he still went 34-1 to win the game. I’m willing to bet that the only reason why Infection is popular is because of that 34-1 streak. Players are amused by the jangling of car keys, the easy, cheap and nearly free kills that they get because they’ve holed up in an overpowered position with overpowered weapons.
“But!” I already hear someone saying “Flood isn’t like Infection in Reach or H3! It’s different! It’s better!” The visual and sound additions are cool, that’s better. The gameplay manages to try and fix some problems, yet somehow make it worse.
Flood have shields. That’s cool. Stop players from getting cross mapped with the Magnum. Flood can still die midlunge because players spawn with a Shotgun. The Flood have super powers greatly extending their range in addition to the long lunge range already on the Crab Claw. Culminating in seemingly random chance outcomes of who killed who.
All in all I see the experience being nearly identical to past iterations. Past iterations that sucked so much they could lift a bowling ball with a straw. I was hoping, hoping so much that you would take inspiration from other Zombie games like Left 4 Dead or Dead Space 2 (yes, EA’s forced and tacked on MP is better than Infection.)
At least do me a favor and allow for community created Flood/Infection gametypes seperate from the default variant. In their own playlist so that people can make balanced variants or variants utilizing the Infection team changing upon death parameters to make Custom Games like Cops and Robbers.