I was expecting each tech to be race specific. For example, the Yor could steal/get in trade farming from the Humans, but it would be of no use to them.
It hasn't got that extreme yet. The Yor still use farming techs, their "charging stalks" provide morale and food.
Despite what has been said about the Yor, morale is a still a big deal to them, bigger since they don't get much in terms of morale structures, or any morale techs. They also don't get much in terms of economic structures either (Economic capital, and one per planet efficiency structures). Combine that with their high upkeep manufacturing structures, and you will find that they don't have much money.
Well wait a minute. so you're saying that all the "unique" techs are nothing more than window dressing?
Well to add in a commment, there is some new stuff such as structral enhancement modules (they provide more hit points for ships), Fleet warp bubbles (improves speed for all ships in fleet) seem to be something unique to the Terrans and Krynn, and navigation centers are a different approach for the Arceans to make their ships move faster (no engine techs) without placing bulky engines on their ships.
To be truely unique, there should be 9 different weapon types, that require a unique type of defense, otherwise it's just a name change with slightly different stats based on the main 3.
The hard part would probally would be finding names for each of them, and then justifing why a they are unique. After that you would have to justify to the devs as to why to use them.
Lets try shall we:
-Fighers vs. umm... more fighters? or point defense?
-Ship ramming vs. Armour? Or maneuvering thrusters?
-Null mater weapons vs. umm... Matter creating hulls or something?
-Temporal weapons vs. umm... I guess it would pwn all...
-Computer hacking vs. Mac OS? or Linux?
-Ship boarding vs. ship security?
Well thats six, add to the existing 3 and we get nine.
And you are wrong in "dressing" too. The races will really have different weapons. All weapons have one of the three types (beam, missile, particle - it remains the same), but the research will take different time and statistics of those weapons will be different too. It means you have to use different strategy for any race you play with.
Correct. The Yor and the Iconians early weapons are quite different from what you probally have seen. The seeker missles are a cheaper version of the stingers, and less powerful, but smaller and easier to employ early on. The Kinetic beams however, goes in the direction of high quality being a little smaller than lasers, but a bit more expensive. The scatter guns (mass drivers) are really cheap, about a cost of 8 for the first one, and 10 for the other 2.