I love Godot to pieces, have used it for several games and will continue to do so. Here's what's missing:

* Sane animation import toolchain. The current one from blender is enormously finicky.

* Good enough pathfinding (supposed to be fixed in GD4)

* Better native map support (heighmap or some sort of interior)

* Fix the 2d tileset editor, doing anything interesting in it is way too labor intensive because it lacks copy paste for tile parameters. A better system would let you set up a small number of tile templates and just map tiles to templates to quickly rig up huge tilesets.