I played the demo for some time now and I think its really good! The last pirates mission is a cool canyon mission but the "megalith" section on the royal route is a bit too hard even with stability/stall parts. Honestly i dropped bombs and kinda works... when you move the camera is a bit too fast too... the new plane is really fun to fly tho (and the surprise is really cool too)!!
The gun cool down always make me remeber of rainderssphere4th (<3) and I think is a nice limitation overall...
I think the game will be awesome! great job!