It'd make for a nice diversion, I guess.
Aside from the obvious fact that it's ripping off Left 4 Dead, I could see some specimens being FAR, FAR overpowered in player hands (Skrake/Fleshpound) while some, even in player hands, would still be near-useless (Clot/Stalker). And having the crawler able to constantly spam jumps like that would just be frustrating, so time will tell how it actually PLAYS. Looks pretty good, though.