This game needs an active and numerous userbase to function properly, like Forts.
It is promising, but not ready in its current state, mainly due to the lack of clear objects to pursue.
The art style is beautiful, but without a tutorial to effectively introduce a player to the gameplay, it is unlikely that anyone will enjoy the experience.
What I really founded interesting, is the flying system. It is easy to understand, but it can sustain complex moves and attacks.
The UI is ok, maybe the buttons are a little hard to see, especially with the not strong color difference between the charging bar and its grey background.
I cannot further critique a game that is still in an alpha state. Develop a great tutorial with scripted missions to help the player handle the basics of the gameplay, and keep working hard like you are already doing.
Bye :)