Keep all three, I don’t like Falcon, but all three can easily fit a good role for air vehicles. All of them decent, nothing really great IMO, I perfer the wasp out of all of them, mainly because of the shields and that 3 people don’t get killed at once, unlike the countless falcons we’ve all seen that have been destroyed with a full team on board after a laser or scorpion shoots it down.
As for keeping all three of them, give them roles.
Hornet, the heaviest and slowest of the three, with the highest health of the three, passengers need to use their own weapons, and can carry flags and certain objectives objects, but are also INCREDIBLY exposed.
Falcon, the middle ground between speed, and attack, however it needs passengers to use weapons, passengers can not transport objective objects like flags, bombs, skulls, ect.
Since it’s a bird by name, give it the falcon ability to perhaps pick things up and drop them off. Like it could pick up a warthog, or mongoose at the cost of moving slightly slower, and INCREDIBLY slow if it picks up a Scorpion or wraith.
Wasp, fast and light, good for attacking infantry and light vehicles, single occupant, with recharging shields.
Personally I would change how the wasp plays, give it a single, powerful, slow rate of fire and non-locking on Anti-Tank Rocket, over the 2 rockets, and give it high rate of fire Machine guns. It’s a wasp, it should deal SOME damage.