It would be easy to do in WO creator. I’m starting to customize planned WO’s now (i.e., I will limit SS intensity to 90%) . Maybe next year for a full custom plan. This is my second year on TR and I really only use it in Feb and March and a bit of April before heading outdoors. I don’t race, training is a pastime, so I get my kicks out of the immediate feedback of completing a WO that was incrementally harder than the last time I did it. The TR plans might increase variables incrementally, but it is not readily apparent.