Personally I go for counters. Instead of using the whole fleet to take out one ship, use LRMs to take out LFs, use fighters to take out LRMs (or scouts, since fighters have been neutered), use flak to take out fighters, and so on. It whittles down their forces without you wasting your ships fighting against something they only do 50% damage against. Heavy Assault is pointless to fight with LRMs since they're a hard counter and LRM do 75% damage against them, so use bombers, which do 100% of their dps against them and structures, 75% against caps but 50% against everything else.