It'd give the net a use after you complete your herblore book. I know there's some sort of plan for Fireflies, too, but it does make sense that you'd be able to catch these in your net.

edit: Being able to grab Silt Crabs would be fun, and like WightofShadows mentioned, Sporelings could be good too.

It'd also be neat if instead of flat items they were little 3D models of the critters. But that's an entirely different suggestion.

Dang, was going to suggest this but you beat me to it. I think being able to capture Sporelings would be kind of neat as well. Basically any non-hostile critter type mob.

Are you going to expand on the research with different animals?? Please please please....that would be very awesome.