Maintenence and New Techs, Starbase Ideas

I think it would be cool if there techs to lower your maintenence cost on social projects. Like new kinds of energy and such that would lower costs, and more sturdy building materials. Maybe this could be worked into the starbase thing too, to lower their maintence whenever a descision is made on how this will work.

Also maybe starbases should be limited in size. Instead of just having to research techs for modules, maybe there should be seperate techs that allow you to add X amount of modules.