The problem is that its good at close range. They could actually get rid of it and have more balance between the precision weapons, LR is great at mid-long range, BR is great at close-mid, Carbine is great at any range if you can keep it trained on the enemy. There's not even a need for it because the other weapons cover everything
the DMR does need to get nerfed and I'm sure it will. Really just increase the bloom effect a little so you gotta take longer between shots. Hopefully boltshot gets nerfed too, although I guess I'm biased on that one since I can never got the OHKO with it
Lightrifle is the best long range precision weapon. It does not suck. DMR should NOT be nerfed. It feels great as is. Why make it feel worse? Buff the other guns instead. This isn't WoW, let's not nerf fun out of the game.