Should have been more diverse and inclusive. The final 4 were a disappointment in that respect. Other reviews have said it better than I can. Hopefully they see this sort of feedback and think about it if there is a second season.
As far as the format - I would have liked if they started with fewer teams and split into individuals sooner. Maybe the last 2 or 3 rounds rather than just the finale. I think that could have changed the makeup of the final 4.
Also would have been nice to have a "where are they now" sort of ending where they show us all of the contestants again and what they're doing.