What are the benefits of AGK2?
AGK2 runs on the Raspberry Pi (somehow, don't saw it live in action) and AGK2 runs on Android itself.
It is smaller than Unity or Unreal on the installation side.
My first installation of Unity was about 8 GByte, I guess and Unreal about 40 GBytes, I guess. AGK2 only about 1 GByte, the Raspberry Pi version only about 300 MB or so.
Export to Android as APK is a configuration mess with Unity and Unreal Engine. It works, but you need to install Android Studio. AGK2 Tier 1 Basic can do that out of the box!!!
What about the Asset store? Oh, we have a lot of assets, but they are not well sorted, maybe. All FPS Creator Classic *.X files are there. That are about 8000 objects (some are doppelgangers)
I think, at this moment AGK2 does not compete with Unity or Unreal. It more competes with Godot. But at this moment Godot can't export to OpenGL ES 2.0 Android.
Game Maker Studio 2.0 is much more expensive, if you want to export to Android.
Does need AGK2 an editor? I guess, it would be great, to have the option, to change the template for "New Project" with some custom files.
Often we write the same code over and over again. Menu navigation, RPG elements / health system, level data loader, ...
I guess, it would be possible, to have a tile system, where you can move your player and paint tiles with it or put 3D objects in a 3D space. And the game would be also the editor itself. And for shipping, it would be maybe only a switch in a variable like: setBuildModeOff = 1