The biggest disappointment for me has been that the "focus" of the track has been for automotive vehicles, and not for traction type vehicles. You cant use the "wye" to create passing sidings or passenger islands. and there is no way to do crossovers for parallel tracks. The full length straight needed to mate with traditional/fastrack makes going from street running to private ROY annoying. I often thought, however, that it would make a decent base for an o-scale "t-trak" module standard, as it has concentric curves.
I gaze a bit enviously at Tomix/Tomy-tech offerings in N.
At one point in time, the "other guys" did have an expansion to one of their project layouts that utilized Superstreets/EZStreets for some RR street running, but iirc, it was only a straight line through town. It's been so long since I looked at it
