Are zerglings weaker than their tyranid cousin? As I recall, they're both essentially rip-and-tear dog-sized things. I was under the impression that the zerg v tyranid thing was mostly that tyranids operated on a bigger scale- There's more of them, and there's more big ones. But little guys vs little guys I can't see a difference just have having played both RTSes.

Wartraks are the kind of thing I'm thinking of when I saw the Orks have this. Bombs (With knockdown!) for the swarm, missiles for the things that stand out from the swarm.