As is true with so much about the game...the solution lies with each player. If people would choose to fly something different now and then, every aspect of the game would improve.
When I first came online, it seemed everyone in EW flew the Hurri2c...so I flew it too. Then it quickly got boring when you could out-turn almost everything, and kill it with a .5 second burst from the 4 hizookas. I started flying other planes and found a new challenge - actually learning a little ACM, instead of pulling the stick into my nutz in an attempt to point at the enemy every opportunity.
So it would seem that in WWI people could try something different. Yeah, it would be nice to have more planes to choose from, but that will come.