*Not necessarily in order, change the deck around to suit your preference. For Nightmare.
You can mix in scavenger support cards if you want.
9/15 cards means you can fill the rest of the build in with more scavenger support cards to help your team out, or some defensive/offensive cards so you can contribute to thinning the hordes.
You can add even faster revive speed with +use% cards.
Unupgraded bandages already heal MORE than a first aid kit. Fully upgraded support items allows your team to easily heal trauma damage through first aid as well as heal full HP and get bonus max HP every BANDAGE. WOW!