Having been back to the nightlies, the project still has movement, though Cycles rendering in Blender, and the general struggle I have to just get things done has taken a lot of time. It's not due to Godot.
I've been trying to get more into a good testing regimen for the game itself so that future builds will not have near as many things buggy or broken. I've been shifting more assets from the .dae format to .escn, and I'm finally able to have SSAO active thanks to a commit by Calinou that improved performance. Also, a number of scripts and other things have been tweaked and worked on.
In addition, the environment is nicer looking now with a rendered HDR map instead of the simple procedural sky.