I don't know how my fellow anons feel about LEGO vidia but I would love to see another LEGO City Undercover game. I have had the first one for a bit over a year and after having logged in over 400 hours I think I'm ready for a new installment.
What I would like to see is a bigger hubworld with more challenges and games. Something like GTA but without all the guns, hookers, and death. Maybe throw in Speed Champions in the neighboring Speed City, something akin to Indianapolis. Naturally even more minifig characters wandering around and disguises to find. Maybe have some of the CMF characters have special abilities. Like 6962617 hit a button and his legs disappear and he's now racing around on the tiny car.