Allthought that Helicopter is sure nice and that Eagle is more a russian company, so sure has more inside into russian aircrafts for a add on i would finally wish that you get the ability to fly more aircrafts of those that are already in the game. Lock On gives you so many free things in what you can do, yet it limits you very much on what aircrafts you can fly.
While i worked on a map i wished so many times that i could go and fly that Tornado i added, or that F-14, or that F-16, or that F-5, or even that Hercules :), etc. Thats the thing i really miss in Lock On, that you have to replace flyable aircrafts if you just tired for a while of those that you can fly.
I would prefer that over any helicopter addition, but i guess that will stay a wish.
Btw nice that you havent abandon the game like Ubisoft did, this game is awesome, wish more flight sims would be that detail fanatic.