Improved everything. Simply everything...
This mod is so big, it has to be uploaded as two RAR files! The other part is here:
Download Simplex 3.9 (Part 1 of 2) - Mod DB
Extract both files to your Homeworld2\Data folder (with WinRAR 5.0 or higher version) and read the PDF manual for installation.
Truly epic mod, thank you very much for the time you spend to improve the original Homeworld 2 game tenfold!!!