Wow, I almost forgot about this thread!
it's good to see that I'm not entirely alone when it comes to Superboy.
Given that the series is now being rebooted I don't know if my original Superboy idea would work, but if Faora is able to literally punch the blood out of Superman as seen in the trailer then it may still be viable. Make Cadmus a top-secret "paramilitary science research enterprise" with a "mysterious benefactor" (i.e. Luthor). Whether or not Kryptonite factors into the MOS story or not will depend on Connor's "hybridization," but I hope it does so that Luthor can contribute his DNA to Connor's creation.