K..... Troop transports. In other threads, I have argued for the addition of troop transports. I am no programmer but have been informed, as far as I understand, that there are difficulties in having ships carrying troops in this Civ IV Mod. So, don't have actual troop units as such. Consider them virtual all-arms units but their actual strength will depend upon small arms development. Have colony ships as troop transports, coloured grey perhaps, which are weighted with a given strength, depending upon the small arms development of the attacker, against one or more "bunker networks" a la Birth of the Federation, which have a factor based upon the small arms development of the defender. No troop units as such but combat factored in by the strength of the quasi-colony ships against the number of bunker networks. I am open to better suggestions - I am just trying to show I have thought about the matter! Live long and prosper.