I came back after a long hiatus (flew 2001 - 2012), and it's still great fun! I do wish there was a bump in numbers, seems that 100-200 in the MA is the standard most days, depending on time of day. It's fun, but I miss the 250-300+ days! For the long-term health of the game and community we need a way to encourage younger folks to join, and to provide incentives for them to stay. The MA is fun, but the method is basically the same it's always been with respect to base attack/taking. It can be both freedom and a bore at the same time :-0
My favorite have been the scenario events, but those take commitment and planning. I'm not sure people want commitment and planning these days, a lot of times I see kids with virtually no attention span wanting a quick fix (Fortnite, Clash of Clans, etc.) and then they move on to something else. If AH could find a way to engage the interest of those players and hold it, we'd see the numbers climb!
Bottom-line: still fun, join up, see ya in the skies!