I just recently started using Zwift and am really excited and impressed by it, which is weird because I have always been the anti indoor cycling guy…well up until having kids and severely reduced free time.
As your team starts to look at ideas for new routes I would like to suggest the iconic Pikes Peak. It is already legal to cycle and in real life allows you to start at 6k ft elevation and pedal all the way to 14k ft in about 25 miles. There is also already a cycling race each year up the mountain too so there is something real world to compare yourself too.