TR actually made a set of Polarized plans (still in the experimental stage), with research based in part upon Dr. Seiler (the guru you are likely talking about).
They offer 6-week Base, and 8-week Build options, with the intention of applying an appropriate Specialty phase from the TR library. These tend to align with the 1 or 2 Hard workouts per week with Easy workouts for the rest of whatever volume you choose.
I can’t comment on the complexity added since you are Tri-focused.