i heard in the Q&A on the forza discord that they will be adding in new environments and updating the world over time .
It would be absolutely amazing if we could get Fujimi kaido with Hakone circuit into fh6. Only a couple thousands of people got to experience that amazing track on fm23. If you bring it into fh6 millions of people will get to experience that amazing track . You guys have all the assets and it’s on the same engine , I’m sure they could optimize it for fh6 
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Plus on both of those tracks there’s roads and signs that lead to each other . On Fujimi kaido out of the map there’s so many roads and buildings leading to somewhere . Like they were testing things out there to try to implement it 