I like the concept of mechs. But only in support of infantry I used to be a cavalryman in the military. We normally had 4 Humvees for support and fast attack, and securing flanks. Then we would have 2-3 Stryker's in support of infantry, they were heavy support, mobile cover, and if needed they could be gutted for medievac and quick evacs. So perhaps limit the amount of Mechs. Or turn them into squads and class them and choose someone you trust to take care of these squads and make sure they remain on track.