Some of these ideas are mine and some I've heard from other people. :D

Can we have a track where we race on land through the turns of the canyon? It could start towards the middle of the island then work its way out towards a bridge and then end with a long straight down a runway?

We could have armor where when it's shot it gets damaged but won't explode like other parts. It would way a decent amount though so putting a lot on it would slow your plane.

Multi-plane dogfights. We could have two teams of 3-5 planes fights all at once. There could be a ship in the water for both teams so you could have help. We could have tanks on the ground. We could choose to control all of these. (Except the ship).

Can we have a mode where we can make our own carriers that don't lag a lot. We could have pieces like Large 30m Runway, Bridge, etc.

VTOL CONTROL PANELS. PLEASE!!! This is something everyone in the community wants and needs! Please add it!!!

Lights! Let's get lights on our planes. We could have small landing lights. Many colored lights (color could depend on paint or all colors would have a certain part). And spotlights.

Private messages on the website would be nice to make collabs of tell mods/Devs about certain users without going public.

Folders on our accounts. We could group planes into folders titled to what we want. You could have a folder for Boeing planes or anything. If you have a sieres (let's use my Island Planes for an example) we could have them all grouped together.

Random Plane Generator. When we click on planes, under newest it could say random. The page would then choose random planes without limits. They could be one of the first on the webpage or brand new, 0 upvotes or 20. This would help get some more people noticed.

Parachutes would be great to have to slow our planes down quickly, or we could use them to make cool ejectors or use them to help returning space capsules.

Wind and other weather. Like heavy rain. And high wind. Snow and ice could make runways slippery.

Engine failures!!! In settings we could turn this on or off then say how often we want it to happen. It would make an engine start smoking and then about 30 seconds later it loses all thrust. We could have fuel tank leaks, or our altitude/speed readings could fail, etc.

Thanks for reading this all. Upvote if you liked it and comment you ideas below and I may add them.

Windows so we can make our planes look nicer and more realistic