I'd love to see some new fiction where maybe the GoBots are basically new factions from another world, fighting the Transformers in a sort of 4-way conflict. Or joining with. Maybe mixing or matching, as suits their needs. I'd applaud someone who could make the Autobots and Renegades or Decepticons and Guardians joining together work.
I imagine that at the very least, the Guardians and Autobots would ally themselves eventually, while the Decepticons and Renegades never quite click for obvious reasons, and thus being a deciding factor.
Wouldn't even have to use the GoBots name, really, unless they wanted to for marketing purposes.
I feel like the not-Rock Lords in Legacy are already sort of a step towards this.