Personally, I'd merge the functions of Solus and Alchemist together. Being able to transmute and create elements would help explain away the quasi magical aspect of the godly artifacts. Liege Maximo and Amalgamous I'd put together as well, seeing as they basically made Liege Loki, the trickster having superior shapeshifting makes sense. Vector and Alpha Trion's roles I'd combine because controlling time would make the ultimate historian.
I'd also remove Quintus altogether since having the Quintessons origin also be Cybertron just complicates matters in general. If organic life can spring up simultaneously all over the universe, I'd posit that mechanical life can too.