I chose which suit to replace which marine from the marine's role (Alien Swarm), the suit's role, (Dead Space) , the suit's seeming bulkyness (Dead Space) and the marine's health bonus, should they have one (Alien Swarm):

Tech:

Vegas, having a 3/5 Health Bonus, gets the Engineering [vignette4.wikia.nocookie.net] Suit.

Crash, with no health bonus, gets the Advanced [vignette2.wikia.nocookie.net] Suit.

Medic:

The medics in this game have no health bonus, so my choices come down to the role:

Faith, being a pure medic (And having a Speed Bonus), gets the Agility Advanced [vignette4.wikia.nocookie.net] Suit.

Bastille, being a combat medic, gets the Triage Security [vignette3.wikia.nocookie.net] Suit.

Special Weapons:

Wolfe, having a 3/5 Health Bonus, gets the Elite Vintage [vignette3.wikia.nocookie.net] Suit. While it does not combine with the Special Weapons's color, it is much cleaner than one which does combine with [vignette3.wikia.nocookie.net] .

Wildcat, having no health bonus, but having a speed bonus, should have the Shockpoint Advanced [vignette1.wikia.nocookie.net] Suit. The Advanced Suit is the least bulky of all the suits, suitable for a speed bonus, and its color scheme is similar to my pick for Wolfe.

Officer:

Both Officers have a health bonus, so let's give them both Security Suits:

Sarge gets the Soldier [vignette2.wikia.nocookie.net] Suit (A reskin of the Security Suit).

Jaeger gets the standard Security [vignette2.wikia.nocookie.net] Suit.