How hard would it be to add sounds for certain events? Like, simple beeps or something.
Hopefully we could make them toggle-able, so we could just add audible queues for what we want.
For example: something I would really want would be when a t1 mex finishes upgrading to t2 there would be a small beep, thus, an audible queue for you to start the next one right way, even if you're not babysitting the extractor waiting for it to be finished. This would help with forgetful folks, or just if you get caught up in a tense battle you'd miss it, but with the beep you wouldn't hardly miss a micro scrolling out and upgrading the next quickly.
Another event could be when a factory finishes upgrading. What else do you think would be useful?