There is the annoying thing that happens though, such as with the 'farming' techs. Since there is almost no need or want to ever have anything over a xeno or enhanced farm, since in most cases it is very difficult to have high enough morale to make populations over 20 billion worth maintaining. I never research that far up, but when I 'steal' one of the techs through conquering, every planet automatically upgrades every farm, I wish there was a screen that you could set certain improvements not to auto improve, instead of having to go through the multitudes of planets re-building the old ones back.
