Advice 1: Incorporate DBaJ into your games. DBaJ is Don't Be a Jerk, and means that players need to remember that they're not fighting an actual war, they're playing a game where both sides are meant to have fun. All-aero forces, Savannah Master swarms, or landing a DropShip directly on top of the enemy's mech force will get the job done, but is no fun to fight against, and if I'm not actually having fun, I've no motivation to play against you in future games. And if everybody decides that and you can't find anyone to play against, you've definitely lost the game.
While I don't recommend banning Aeros from your games, try talking with the other members of your group, and setting some boundaries. As an example, in my group we've agreed that no player will bring more than four artillery tubes in a single force. Maybe come to a similar agreement, where players agree not to bring more than X% of their BV in aero units and ordnance?
Advice 2: Within the above, remember this: A force that is not prepared to deal with at least some aero, deserves all the aero that happens to it.