Yeah, tech trading will be optional in 1.1
I trade "trade techs" to my economic partners to increase my trade income, and I'll trade some defensive and general ship techs if I want to influence the outcome of a war. I never, ever trade weapons.
For example, in my current game the Thalans are the most powerfull civ, besides me, with the Yor pretty close. I traded medium ship building and shields to the Yor in exchange for them declaring war on the Thalans. With the shield tech and medium hulls, the Yor were able to damage the Thalans military strength signifigantly, while both civs economy suffered. The Thalans were able to turn the tide after a while, but the damage is done. My new "Mantis" Class, large hull war ships are rolling out of the starports as we speak. Bwahahahaa!
Causing wars between other civilizations is one of my favorite parts of the game.