Some other thoughts:
Visually, in the optimizations screen, it'd be nice if the tic points were a brighter color, so I could better tell at a glance where they're distributed. Maybe make the activated icons brighter in addition to that, as compared to the surrounding upgrade icons. (Available tiers brighter than unavailable, and activated brighter than those.)
Also, perhaps this is already in the works, but during siege mode, when you put the energy into the base, I think the energy gathering machines needs a beefier, harsher sound. For such a big and important mechanism, they certainly sound diminutive!
Loving the game so far! Looking and feeling great!
 
					
					
 

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