I like the approach allot but it should be an ability and no always on and then it would require micro.
Actually it would more like a unit able to fire "free" flare.
Sneakeye is you MOD publish so we can test it?
https://www.dropbox.com/s/1nnpnpy2l2s0exa/IR_Halftrack_new_ability_v2.sga?dl=0
The halftrack has an timed ability which ignores line of sight, same effect as in the video of Olekman. It also detects camouflaged units within the sightcone while the ability is active.