[President_Elect_Shang]

The repair bay component doesn’t get any bonuses from population level; just tech level. The only other bonus you get is from the reduced maintenance of it being a base; regardless of type. Shipyards come with the ability to repair but if you need to increase that ability and you prefer not to use repair ships I would strongly recommend building a repair bay with the shipyard; in other words a single base design that has both. You can always up the number of repair bays in the design if you want. However, one shipyard and one repair bay should do most any job nicely. After all how often are you going to need that extra repair rate? At least this way the repair bay will still pay for itself since it will be piggy backing off the shipyard.