What do you want to see for the first Forza Horizon 6 Expansion?
I would personally like to see the Expansion being On Map and connected via a bridge with a gate that is either closed if you do not own the Expansion or opened if you do own it. I think Legend Island was used as a testbed for that and I prefer it over a loading screen.
Also the Expansion should be more Japanese Regions and Areas like Mount Fuji rather than a Toy expansion. There is lots of potential with that. Maybe it doesnt need a bridge but rather a gate where you can drive through those new regions and its either closed or open depending on if the player has it or not.
As for the theme it should be focused around Street Racing with a mix of Japanese and European and American DLC cars. Something like a 2025 Toyota GR Supra A90 Final Edition or a BMW M3 E90 Sedan or a 2024 Ford Mustang GT Convertible... etc. This Expansion should also introduce new customization options like the changing interior colour or underglow or something else.