I have played through Homeworld
The level 6 was not really a challenge. It is only difficult at the beginning until you have positive growth, but you can prepare everything already in level 5. After that it's just waiting forever for the 2 mio.
What I missed is the challenge to HAVE to build the portal early in the game so that you can do research at all, for example, If the Homeworld is not supplied, research stands still, just as a suggestion

I would love to use the entities furthermore.
Very useful the Fishery, the Throughput Monitor.
Only the Lumberjack is to slow to be useful.

Could you create a separate mod with the entities and maybe an faster (by setting) Lumberjack?
Not urgent just an idea :-)