- IndyCar
- Formula E because Kaz have tease something in the Past, and TAG Heuer is the sponsor of both company i think
- RedBull
- WEC (but i think they have a contract with GTR3)
I think something to note about Formula E is that not only does Kaz want to bring it into the series, but Brooklyn has a Formula E street circuit, too. IMO I'd love more city courses, even if Tokyo Expressway has grown on me over time. Especially if they may use the same locales, but were re-designed around the real-world cities changing, and/or the fact that they may've only been designed for so many cars to be on-track at once, and even so, they may be designed in that cars of a lower tier were the best cars to use on those layouts before things get too chaotic. Also to note is that some of the city courses from GT4 eventually had real-world layouts within Formula E, including Hong Kong for one example. (Speaking of East Asian islands, I'd love the Macau GP circuit, too.)
(Another note: I think the courses that were limited to two cars in GT4, like Citti di Aria, should be remade as point-to-point time attack stages, rather than attempting to be circuits. I'm tempted to say the same of almost all dirt/snow courses from prior games, as well, other than the Ice Track if it were to return from GT4.)
On this note, I think in Sport Mode, and on PD's end, there should be a "bible" for what courses and car combinations are ideal, without restricting the options for player-made races too much within lobbies, aside from more extreme cases like only permitting karts on the Karting Space circuit. This "bible" could be mostly based on realistic combinations and/or what real-world courses the original courses are meant to emulate in their design, but they wouldn't be solely and strictly adherent to the combinations seen in reality, either. So for example, I'd have this "bible" typically have events involving the Nordschleife be limited cars up to Gr.3, much like real life. And since Super GT/Super Formula races are largely held on Japanese courses with some other East Asian courses like in Malaysia, I'd have the respective cars in GT be typically hosted on both the real-world tracks like Suzuka and Fuji, but also the made-for-game courses both set in Japan and East Asia as a whole, such as Kyoto Driving Park, Tokyo Expressway, the Special Stage courses sans Route X (as Route X is set in the USA), and Tokyo Route 246. Ideally, there would be a variety of locations for each car, so if there were a championship for both Super GT500 and Super Formula, neither would have both Tokyo Route 246 and Tokyo Expressway, but one may have the other. But not all courses in East Asia would be eligible, either, including much smaller layouts like Suzuka East, Kyoto Miyabi, and Tsukuba Circuit.