[Trachmyr]

The way around this is simple... don't add research, add resupply or spaceport abilities to it... and mod AI_facility_creation.txt(?) so that the colonies only build one of the approprite item. For instance, add resupply to shipyards... your homeworld will start with 2 shipyards, then modify the AI_facility_creation.txt(?) to remove all instances where a colony is to have both a shipyard and a resupply depot. Of course the drawback is that now you need only build a shipyard and you'll get a resupply depot for free... but if you increase the costs of the shipyards some, and reduce the costs of the "normal" resupply depot, then that will give human players a reason to only build the less usefull resupply depot as it will be built 5x/10x faster than the shipyard.

Just my thoughts on the matter.