To be honest this have bothered me from the day I started this game - I really dislike the way the game looks in thermal vision mode(like noted - it's "cry engine 3" but the game looks the same way that Alien Versus Predator( 1 !!) looked like while playing with the Predator, and that was 10 years back...).
I don't mind not liking SINGLE game feature - and put that way this doesn't seems like serious problem.
However...
Playing without 80%+ in thermal vision mode strats making me feel very underpowered, just cause the other players plays with it and yes - that itzi bitzi build-in making-the-visuals-unbearable ability give you the unfair advantage to be able to spot enemies from 1.5km+ away.
No, there is no other way to do that in the fashion the vision mode does(tho I haven't tryied the zoom module yet, but still I can pretty much bet that zoom + thermal is better than only zoom).
So basically I feel like I can either enjoy the game visuals and feel my money spent for great PC config justified, or... try to win the game for real.
No, I dont feel that I can do both at the same time and I won't defend myself with the line that "I'm sure that many others feel the same" (tho I'm pretty sure it's the truth

).
I understand, that implementing the mech's heat signature be visible, while maintaining the normal vision will not be solution at all(since it'll jump from 80% time usage to 100%), also removing it will absolutely break the "sniping" gameplay, making it module will make the trial players feell very underpowered and honestly I have no solution in mind for this.
But I really feel bad when the game looks that... terrible... while it's so "heavy" to run and have so much visual cookies to provide.
On secon thoughts, removing the vision probably will boost the player awarness and skill to a whole new level(when get used to ofcourse) and make the trees finally some serious cover, while now(again - mostly cause of the thermal vision) you feel like an ***** with a screen covered with leafs, while you shine like a big, shining bright, friggin blue christmas tree in the distance

With that tweaking the upcomming magnetometer to keep the original visuals, but showing the mechs metal signature through objects, maybe seems a bit like justification - if made extreamly expensive, costly and hard to get, available for handful of mechs or something - really I'm not good at all with the sugestions...
Anyways, I thank whoever made he's will to get to this line and not wishing to flame my sorry backtail

Sorry for any offense caused and bad grammar.