Yes, I know of the emblem.
Nope. That’s it.
Experience 
you get the desire to play more :’(
Do you get the emblem if you’ve played 10 matches?
Flight 1 - experience and just lucky to be chosen, bot arena fun.
Flight 2.1 - experience and all the fun with academy, pvp 4x4.
Flight 2.2 - experience and all the fun with academy, btb 12v12 and pvp 4x4. Emblem if you played 10 btb or pvp games.
The fun of playing and helping development of a game a lot of us love?
I would have liked to get something more, but isn’t like participate was mandatory, i’m sure all of us participate because we wanted to play the game before launch, so we got that. Also if you watched the community play-date and played with Sketch you also get the ice unicorn emblem (day 1 wich is awesome)