10 Things We Want From Netflix's Transformers: War For Cybertron
2. Other Worlds
There are many many worlds in the Transformers universe. Nebulos, home of fantastic technology that led to a symbiosis between organic beings and the Cybertronians. Velocitron, where every day is another race between the fastest bots on wheels. Caminus, home of the first wholly fan-designed Autobot, Windblade. Eukaris, home of the beast mode bots. There's probably a good dozen or two more, and yet most of the fiction takes place on two planets: Cybertron and Earth.
While there's probably not any scope in the Siege arc of Transformers: War For Cybertron to show other worlds, the famed early Cybertronian expansionism could be mentioned easily enough. And those bots who have a history on other worlds could flashback to their earlier lives. This would do wonders at expanding the world of the show, even if just for a few seconds here and there.
It's likely that the first season will end with the Ark launching from Cybertron, taking the Autobots away from the war and with the Decepticons in fast pursuit. This leaves season two open to show these worlds after the war has already taken a toll on them, and that contrast can again hit home the horrors of war.