Hello,
I really enjoy your mod. It fits well to the alien / foreign planet setting, I mean why should the planet we crash land on have iron cupper etc all we need to build a rocket :D
IMO the techtree is a bit bulky / messy, can you consider to sum up techs?
For example the "oil" techs -> 3 techs into one that costs more and you get all 3 recipes with one tech.
best regards
Nals