Hi, thanks for the feedback! We have now implemented improved customization of the controls. This can be accessed by pressing ESC => "Control Settings". For the simplified controls, we have added a new "Simple / RTS" preset. Hopefully this helps with your use case!
As for the difficulty and overall UX, the game does sit on the complex and hardcore by design, in the same space as Rimworld and Dwarf Fortress, and that depth is a big part of what we're building. We'll definitely keep polishing the rough edges and making things feel smoother wherever we can, and the new control preset is one step in that direction with more to come.
Thanks again for streaming it and passing along what your viewers were saying. That kind of insight is really valuable to us.