I'm a fan of the ENY idea as well, although I'm open to concepts that might improve it. One idea I did give some thought to was the approach of extending the perk point concept to do the same thing that ENY does now. We already have a variable perk point cost for certain planes, so why not extend that to cover more of the plane set? Rather than a hard cut-off point the way the current ENY works, you would just see other planes start to cost perk points to fly as the sides get unbalanced. If you really want to fly a certain plane, then you just pay the perk points. There are a few challenges to this idea, of course. Pilots with vast perk point balances, the need to always have "free" rides, the usual perk point imbalance issues, and so on.