I'd reduce its manpower cost and change its vet to a medium tank vehicle snare, similar to target weak point. Would make it more desirable and would help it scale and maintain use ability. But either way I like it for taking down flametraks. Prevalence of so much fire means at guns are suffering.
Personally I just find them annoying, but they're hardly invincible. I usually play 2v2 with a friend and we just have a commander or plan to tackle these with return indirect. Katy or ml-20 usually does the trick, you just have the wether the storm till you get there. I'm more bothered about OKW volk hordes being blobbed around, or blobs in general