Characters from Every Era
A great starting point, and a direction DICE seems to be pursuing if the leaked teaser trailer can be believed, would be to tap every era of official Star Wars canon. Sure, the prequels were a painful cinematic experience, but that doesn't mean they didn't spawn some excellent characters, droids, and settings. Give us levels set on the streets of Coruscant, or in the maze-like caves of Geonosis. Give us badass Jedi like Mace Windu and young Obi-Wan Kenobi. Give us four-armed Jedi-killer General Grievous, and then prop him up with battle droids and droidekas as cannon fodder. Who wouldn't relish the opportunity to swing a double-ended lightsaber as Darth Maul or shoot Jar Jar in the face? Judging from the teaser, at least one of those fantasies is being serviced; fingers crossed for that Gungan shooting gallery.
And then there's the new trilogy; it looks like we’ll be getting our hands on Kylo Ren, at the very least, but here's hoping we may see Captain Phasma and Poe Dameron make an appearance too. Based on the last few seconds of the teaser, we know that heroes from The Last Jedi will be included as a pre-order bonus.
With Star Wars Rebels proving to be such a hit, and itself crossing over with Rogue One, there's also potential to introduce Kanan Jarrus, Ezra Bridger and grown-up Ahsoka Tano to a gaming audience, and celebrate fan-favorite Grand Admiral Thrawn now that he's been re-assimilated as an officially canonical bad guy.