I think cybertron was being destroyed while the portal was closing, so it may only be half destroyed like in animated: and there are still transformers there, so if they can restore that part they can live in it... after all, after the war and whatever can happen in space the cybertronian population can not be that big to need an entire planet...
I remember there was a planet like cyberton somewhere... comics maybe... I would like if primus had gain size and snanned that planet and in the end of the series the transformers go live on that planet... or they probably will like in the creators's planet, if such thing exists
Earth was seeded with Transformium, that couldn't make it another Cybertron? The best I can tell is, the Creators know how to construct Transformers from Transformium and Optimus may be questing for this knowledge to rebuild (pun intended) his race.
That wouldn't surprise me if at the end Optimus actually brings Cybertron back or creates a new homeworld.
Didn't optimus say in the movie that the creators cyber formed a few different planets. So in instance we could have a few metal plants out in the universe for optimus and the autobots to inhabit
hey, maybe that portal desaster did not make a hole on cybertron, but created some kind of quimical reactions that turned that part of the syrface into a ruined lost sector of cyberton enter the mysterious bayverse sea of rust
I can see Cybertron coming back somehow but I hope they don't copy the Omega Lock idea from Cybertron like TFP did
Unless Optimus has a power greater than the Fallen in putting Cybetron back together no. Also there is problem about Energon. Optimus wouldn't use the Sun Harvester. If you are talking about the Seed remember it has a limited blast size of a tactical nuke and needs organics to make Transformium.