Okay, I think we have a good basis! A few suggestions if I may?

-Merge the dark Continent nad machine island into one? From what I know of SKL, it should fit right in with a only a bit of changes 
-Maybe make Saotome Labs and Axion Foundation Labs ether partners or rival labs? They are both in the business of robot making! 

And what's the relationship between the PLANTS and Zeon? Friendly I wold presume, but perhaps also a bit shaky?

As for Originals....hmm. Perhaps one of us could have a "real" original from Real Earth, and the other original could have one from Super Robot earth with a super robot?