How about a maintain-aim lock-on? Reduce the lock-on angle so that you actually need to aim for the aircraft rather than 'anywhere near is fine', reduce the time to acquire a lock, allow missiles that are already in the air to lock-on/relock, reduce the lock-on's maneuverability so it doesn't do three 360's in half a second With those changes, aircraft can dodge a lock with quick movement or high angular velocity compared to the lock-on user, lock-ons require skill to maintain, Lock-ons aren't fire-and forget, lock-ons can be fired before the lock for a surprise-attack, if a lock-on is shaken the player can re-lock on the same aircraft (or even switch) as long as the missile is in the air, things like tiny twigs and trees that block the lock-on for a tiny moment are still annoying but don't block the entire shot because the lock-on is re-acquired quickly if the player is skillful enough. Also, let's introduce new types of G2A missiles and weapons. How about a guided missile that when it comes within 1m of an aircraft detonates like flak? Normal flak has an 8m detonation range, so 1m is only 1/8th the current standard flak detonation range. That's a far enough detonation range to be effective and a short enough detonation range that a hit isn't guaranteed. Or how about a medium to high speed coyote-style missile? Get it close to the enemy aircraft and it auto-locks. If you once again introduce a lowered maneuverability and the missile can still miss the target even if it comes close enough to start chasing it, necessitating proper leading with the missile. Also in the vein of 'make sure some adequate G2A is available to starting players', increase the elevation range of HE and HEAT canons on all vehicles. That way you set HE and HEAT apart from the one-size-fits-all AP shells and the HE and HEAT canons can function as G2A fire that can't OHK an ESF (the Vanguard HEAT would need a weapon-specific damage reduction to prevent it from OHK'ing ESF). These guns would still be useful for engaging larger aircraft like Liberators and Galaxies, but to actually finish off an ESF you would need a ton of skill or a dumb ESF.