[Tomgs]

The reason it probably still has a net plus is you can lose some if you emergency build something that takes an odd number of turns. For instance take the good old space yard normal build time 5 turns emergency build time 3 turns you lose that half turn in there because build times don't carry over to the next item. I am not saying it is completely balanced but I don't think its a game killer if used in emergencies not just all the time. That is up to individuals though its an option. I don't use it much but I would hate to have to wait 3 to 4 game years to build those stellar manipulation devices without emergency build.