It seems we now have a "bird in the trees" (I'll have to think up another alias) she sent along this link and confirmed everyones fears.
The wind riders count as troops meaning they can easily zip across the battlefield picking up those lightly defended objectives. Why not throw in a Warlock and give them all a scatterlaser for good measure? By combining Conceal and Jink you'll be able to give your opponent a headache.
I hope you have deep wallets or a plan to deal with the incoming Jetbike spam.