I still adamantly say, all or nothing objectives, drive most folks away from any coordinated group effort. The term horde, is nothing new and will be found in most any multiplayer game.
Bishops had V mega squad that rolled bases, AND provided a great number of opportunities to find an air battle (even if it was in a concentrated area).
NOE quick strikes were successful rolling bases, and also gave ground units the opportunity to get in some defensive ground to air kills.
Almost any other type of group effort besides the newly favored fleet sneak attack, is fading fast..... along with........ (sigh)