A countertatic to fight droppers: use teamchat to organize who are going to do what, and send one or two pilots to sneak to bomb, and make one or two to drop and fight the dropper back. This is just an example of what can be done.
I used this (and other tactics) and it works 75% of the time, and no more long, boring bomb games. Two days ago, I begun a turn-fight against a dropper and kept flying in circles for MINUTES, just maneuvering a bit to bait him to a point of the map away from his base. Know what? My teammates bombed 4 of his hangars on that run, and he suddenly quit. Oh, and he was on the outnumbering team!
What I mean is: there is always a counterplay, its just a matter of using two usefull tools:
1 - TEAM CHAT
2 - OUR BRAINS.
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EDIT: Droppers, sneakers and campers make this game FUN, to be honest. If not for them, this game would be BORING!!!
It would be like playing Pac Man without ghosts!