Some general comments (independent of the final items in the research tree):
1. I would like to see more dependencies in the research tree. Particularly between the six areas. More meaningful ones rather than research a level 5 research tech to get any Tier 5 tech.
For example, bots / machines are powered by fission cores.
When you research fusion cores, all new bots can be manufactured with this tech.
Alpha Centauri had this kind of mechanic.
2. The Physical research area is more of a mish-mash between military, and medical.
It needs more medical technologies: hospital is clearly missing.
Doctors can be re-searched as a profession, and then assigned to a colonist.
3. I am pretty excited about the game in general, and the idea of a research tree as well.
I just think this particular version needs more thought in it to make it more intense rather than boring.
For example: the user needs to be forced to make hard choices at the beginning: focus on food, focus on defense, focus on offense, etc.
The tree may actually be achieving this: more will be clear when we get the game, and if we put values / costs on the tree.
4. Items on the research tree I don't like:
A. Sex Bots: Too.....sexist? And in case I am the squeamish type. I thought this was a game I could play in front on the family.
B. Stealing from traders: Should not be a Boolean. More based on ethics, risk, etc.
5. The social re-search tree seems a little artificial. May work in-game, but otherwise force fitted to become a tree.
Can we instead have these mechanics based on creating buildings which
add happiness like library, sports area, etc, and the creation of these buildings would be based on requisite technologies.
6. You could have (only if you wish) dedicated counsellors to help counsell people to prevent them from become unhappy, and going too low.
This would require the profession to be un-locked via research tree, and then a counsellor assigned.
7. Combat Tree:
Items like vest would better: block damage rather than increase health.
Why should they do that.
Better to have Combat Suit - I and Combat Suit -II rather than the current design.
Maybe don't quote a message this big (-;