One thing I really like about Zero-K is that things start happening _fast_. The free first factory is a major reason for this.
I was wondering if this could be further enhanced by streamlining eco a little. One thought I had is that you could get a free first mex as part of your starter pack, maybe a solar too?
Another option could be adding a little bit of energy gen to mexes, giving you a few more APM to start scouting/raiding vs eco - this option in particular would also make the game a tiny bit friendlier to new starters.