Quoting Frogboy many pages (and months) ago....
"I don't know if this counts as tech randomization but we are planning to have a pool of techs that are are inserted into games based on whether they make their probability roll.
I.e. certain techs would show up in some games but not in others. Not core techs but ones that spice things up in different directions."
If they can't stand to have core techs NEVER show up in some games, just randomly have them sometimes show up later, maybe not at the same time for each faction.
Anyway, I like the basic concept. I'd like almost anything to force some variety by stopping us from always picking our favorite techs. In this, as in so many other things, MOM is an example of doing things well, while AOW:SM is an example of close-but-not-quite. Not a big deal at first, but wait till you've played Elemental for as many years as I've played MOM. Get enough of these details right, and people will by playing 10+ years, even without modding.