I agree more volume options would be of minimal value, and not where I’d like to see TR investing its talent. But, a lot of what the OP seeks could be facilitated with a bit of additional functionality in the Calendar feature when you add a plan.
The Calendar already allows you to pick the days of the week on which the workouts fall. It would seem a logical extension to allow a user to add outdoor ride(s) as part of this same prompt-driven process (with very simple metrics, like duration and TSS). By the same token, the user could be prompted to add in any recurring stuff (strength training, mobility work, whatever).
An additional feature could be whether to schedule recovery weeks every fourth week (the way build and specialty plans are already built) or every third week (as is often recommended on the podcast for older athletes and detailed in this post by @mcneese.chad).
None of this requires new plans, per se, just automating existing functionality in the Calendar to move stuff around and add recurring workouts. Folks familiar with the capabilities of the Calendar already do this, I’m sure, but this might be a way to help more users get the most out of this excellent calendar implementation by using it to tailor their plans.