I feel like they need a slight buff but not much. I've been using Zarirnaea-D—which I know isn't the greatest rifle for Crucible— however I have a lot of fun using it in PvE and in PvP can usually get a good 10 solid headshots right off the bat even at medium distance only to be taken out by a quick two shots from Mida. Having said that, I may be in the minority here, but I would think Mida needs a bit of a nerf, but that's just me (and I'm really not that good at Crucible).