I was wondering.. It would be nice to have more random tech-trees. Giving civs advantage over techs "X" and others over techs "Y" (decided at random during game progression). Or maybe have random events give the opportunity to the race that benefits it to research an exclusive tech.
I have also to say that I loved Alpha Centauri's idea of setting "blind research" on/off, where you cannot choose your line of exploring. Off course, since in GalCiv2, some techs are absolutely necessary to the conquer of the universe (Planetary Assault jumps to mind), we'd have to find a way to make it work..
Please comments/suggests at will