I played until my machine couldn't handle anymore. It's interesting what a time limited jam can do to a colony sim. Not all of the simplifications jived with me. But you ended up with a really polished experience, so that's great.
I really wanted better control over professions of my population, though I think I eventually got the hang of the system and learned to let go and be okay with it. I'm not usually a fan of heroes in RTS style games, as they just seem to make every other unit relatively less interesting or powerful. But the way they are used here just to simplify combat feels pretty good to me! Actually selecting them felt a little awkward though.
I think the highest impact thing to add for me would be tooltips, especially for the upgrades. What does this do, and how long is it gonna take?
Am I right that there's no point in building more than one of each type of building?