I know that dev is not used often as it seems to be the type of power that takes time to develop. It also seems to be used less in regular battle than other secondaries which is why I am betting it is not used as often. I am curious if it really is useless or fun? I watched a video on youtube of an ar/dev who teleported mobs into his trip mine which looked fun. Anyway, I am not entirely sold on dev just yet and would swap it for /em if it would work better on teams/solo. Thoughts?