I've yet to entirely buy the idea that mech lists suffer in the new rules. My Guard seemed more viable than ever, since glancing hits can't stun lock you now. Sure, I'm more likely to lose the tanks in the latter parts of the game to concentrated firepower... But in exchange, stopping them from firing in the earlier turns is much, much harder.

Throw in the fact that immobilized no longer kills a squadroned vehicle, and my Russ variants are just endless amounts of devastation embodied in one package. Hell, since the full strength is used for the entire template now, they've even been improved vs other vehicles.