There's a lot of feedback related to Quality of Life and UI. The next cycle of updates will focus on addressing that, as well as improving the modding system.
Primary Focus: Quality of Life
As much as new features like animals and missions could improve the game, the overencumbered UI and the lack of some highly requested quality of life improvements are not the best foundation for expanding the game.
Specifically, the coming updates will address this by focusing on things like:
Menu flow, map and saving.
"Bumper" camera.
Instrument improvements.
Difficulty balancing.
More terrain generation options.
Theme and colors.
maybe Steam Input (could lead to better HOTAS usability).
more stuff of this sort.
More Modding Options
As a side effect of expanding the modding system, new aircraft will be added to the core game to test out individual features. This is the BP-22, currently WIP as part of the upcoming 2.2.3 update. It will introduce the ability to have multiple of the same control surface type (in this case 2 rudders and 4 flaps)
Besides this, other planned new features are:
V tail
Retractable landing gear
Thank you for all the feedback!