the blender default cube is everyone's enemy

Yeah I'm a bit conflicted on that, while it can be easier to go back and refactor once the system is in place, at the same time if I'm refactoring later it's going to break a lot of coupled systems which can be a headache.

I think when things are generic enough, it's a lot easier for me to transfer logic over to other engines or frameworks.

It's a lot tougher if it's very tightly coupled though.

I am also trying to slowly build up a library of reusable systems and controllers.

This is beautiful!

the rest of the game is giving you the option to explore a different route on the way if you're having trouble with the boss you keep gunning to....

Do you try to come up with words to counter those?