The general lack of diversity is definitely bothersome, but that is not to say that MIDA is overpowered, or should be nerfed, or whatever. If you challenge MIDA within your weapons' range, you can outgun any MIDA user, provided you have any semblance of thumb skill. Push into midrange with a Vigilance Wing(that's the real sleeper in Crucible people have yet to discover,) Nightshade, or any AR. Push into mid/close range with a Handcannon and you're going to melt a MIDA user before they can get 5 shots off. The gun is far from unbeatable. You can't challenge a teamshot in a Scout Rifles intended range and expect favorable results. Maps have so much cover, move around, work with your teammates, or stay at range with a Scout rifle yourself, and if you're still losing to MIDA, then they're a better shot/player than you are, or you just got outplayed in that particular instance.