I started indoor training on wooden drum rollers in the 1950s and this is the best ever, taking advantage of modern technology.
One thing does puzzle me and that is the special features, for example, whereby someone can get an artificial boost of power beyond normal capability. This is almost like holding onto a team car or motorcycle. I think it detracts from the realism and training value, and all these features are just frustrating add-ons that makes for silly outcomes. Dropping these would be easier than maintaining them and would make the ride more realistic especially for serious riders.