Necropolitan
Hero
Good, Rogue seems like he'd make a great addition to the cast if he does come back.there is the ring, the Doctor might use if to rig up a device that can trace Rogues psychic signature across dimensions - it might take a while (maybe even a couple of seasons) but no reason why Rogue cant eventually be found again
Also I REALLY need The Doctor to get involved in a D&D game. He'd either get really into it or take everyone out of it by "Um, actually"ing it and it'd be great. Maybe try to rope whatever or whoever the villain of the episode is into the game.
Heck, I'd even buy tickets/pay for whatever streaming service it was on if Ncuti Gatwa did a liveplay campaign, he's incredibly talented.