Make some planes free in the MA, i like that idea.
Make perk points more valuable. I have suggested this in the past. Make more planes worth perks, even if some planes are 7-10 perkies. Just that little bit of a perk value added to some of the better planes would make perkies more valuable as you would almost be required to use them.
That idea could be implemented regardless, but here's how I would take it a step further. Get rid of the subscription fee, and allow players to buy perkies AND plane skins that they want to use. THIS is how you get to the younger generation. Put this together with a behind-the-wheel (or.. erm... stick) tutorial, people will stay. The younger generation doesn't pay for subscriptions, they pay for useless stuff that doesn't make any difference in a game other than appearance (like a plane skin). Just look at League of Legends and Counter Strike.
People have had issues with being able to buy perkies, like somehow this would make the game pay-to-win. But of course it wouldn't do that. you're not paying to have you plane upgraded. Anyone could get that plane if they earned the perkies. This just gives it a shortcut for the younger member seeking instant gratification, which you have to assume is the norm for any younger player.
BZacc