[Trachmyr]

Another thought... to slow down the colonization rush, I suggest altering colony modules so they are very expensive AND add the "Modified Maintainence" tag and set it to 300! That means they'll cost 4x normal mainainence (w/o racial modifiers, they'll cost what it cost to build them every turn)... this way empires can only use/build a few colonizer at any one time.

And no you can't set what tech is in ruins (except unique tech), but you can set HOW MANY techs are found at any one ruins.