If you want to make things different or interesting, pick another pilot to fly in formation with, fly with them on transport runs land the same LZ and leave the base at the same time. It's surprising how much fun flying in formation can be, especially when it's with a pilot that is good or you trust, or even if you don't, flying their wingman can be interesting as you don't know what's going to happen next (also looks good for the ground guys seeing pilots flying together)
Another option is we could always increase the amount of enemy aircraft.
Anyway, we can only change up our heli list so much, and we can already fly most of them from the spawn. We DID have a parajumping jet that was in trial, but the infantry didn't like the idea as they lose their backpacks doing so.
All in all, I really don't see much wrong with how our aircraft are set up, we have a large choice of air frames to choose from on spawn and it's really up to the pilots whether they make things interesting for them. Me personally I like to try land the infantry where-ever they ask me, just for the challenge (more often than not, it's a dangerous LZ) or where the front line of friendlies are, I'll drop just behind them. There are a number of things pilot can do to make things fun, they just have to think outside the box sometimes.