This is probably more of a wish list for Zwift to become a true multisport platform. How about creating a Tick Tock transition area made ready for a rider to complete a ride, then change for a brick session. It could be a simple stop button T1 when entering, than a timed virtual waiting area where Zwift app auto changes the avatar from rider (racks the rider) to waiting runner, then user hits buttonT2 when they are ready on their tready. You could make some really great seamless brick sessions. The bike and run can have independent saved data files.