Hello Bryce, I am a Tacx NEO owner and watched the videos on Isotonic and Isokinetic mode both before and after purchasing it. I would recommend passing these feature requests by Coach Chad before forwarding to development for the following reasons:
Isotonic mode (constant power around the pedal stroke) was what was taught 20 years ago - to “pedal circles” (SRM’s software would show how well you would do). Today, the belief is that a great pedal stroke is a dual ellipse. I think Coach Chad may have mentioned it (i.e. Isotonic mode may not be something that TR wants to promote).
Isokinetic mode (constant cadence) is an interesting idea, but constant cadence training, both low and high cadence (e.g. 120 - 180+), can be learned using Workout Creator.
The graphic includes a simple example of a snippet showing a gradual increase in power commensurate to offset increase in cadence to keep the cyclist seated. The black lines are the representation of the text instructions for what cadence the cyclist should be pedaling at. This particular one I use for warmups (it goes from 95 to 120 in 1 min increments). It is very easy to build them (I have built a few others), including 15 second ones that go as high as the cyclist can handle (think of it as a Ramp drill for cadence).