Just make the gun visible, just like the elite zealots in halo ce.
The best fix is to remove it as a load out and place it in ordnance drops just like over shield. Until Reach they were always considered power ups , I never under stood the change. That minor change of game mechanics closed the skill gap of this series by a large margin.
I am at best an average player and even I can see the broken implementation of this AA.
‘solution to camo/caMped snipers’
Mobility and a DMR IF 343 hasnt listened to DMR haters and downgraded it.
A mobile targer is hard for a scoped weapon to hit especially if said target does not consistantly travel in a streight line. {Sirpentine/straff}
DMR unscoped can often spot cloaked snipers along the edges of bolders/downed aircraft on Ragnarock for example. And when the aim indicater turns red FIRE get in close and take him out quick.
If successful grab his rifle relocate quickly and he will often come back to the same spot where you can snipe him with his own power weapon and really tick him off.
Of course this tactic will work only part of the time so always look for and dont be afraid to change tactics midstream. For example he has a buddy pop out along the same camp on ya. As soon as you see him. Duck and cover but instead of waiting for his full of health buddies head to turn into a target pay attention for the now less than healthy sniper to stick his head out once to often while also being mindful of his buddies local. If an oppertunity persents itself… Generade {well placed}then fire and if sucessful a double kill may be the result.
Happy Hunting.