I’ve been basically following Chad’s table, it’s quite a handy way of looking at it.
To the above posters who are concerned about AT only prescribing easy workouts, the reductive example where AT just provides Lazy Mountain -1 to ensure compliance is obviously not how AT works - it only prescribes adaptations within the boundaries of the goals for that day (threshold, VO2 etc). The plans have an initial progression rate, if you find it too easy it increases the progression rate, and vice versa if you find it too hard. N=1, that works exactly as I anticipated, and it is categorically not too easy!
Earlier in the last block I ranked some threshold ones easy and it significantly bumped the difficulty. My PLs did start off a bit low in some areas when I first got on in May (personally, that was sweetspot/threshold), but selecting a couple of harder alternatives at the start evened it out pretty quickly. After that I was actually finding it too hard in the last block, so AT backed the progression off a bit, whereas just into this block I have been finding them a bit too easy (I guess after the rest week etc) so AT has bumped the future ones up. It’s basically been performing as expected from my perspective w.r.t. indoor workouts.
Specifically in this block I found the early VO2 ones a bit too easy (i.e., Cape Range which is basically 4x5 at 106% but with a 30s recovery in the middle of each 5 min) and my HR was nowhere near what I’d normally associate with VO2. I ranked it as such and now the later workouts look a lot more VO2-y.
What I found in Build especially is that in the old builds there used to be a couple of workouts which were absolutely killer, and several times I effectively abandoned my plan during build. Whereas this time round, I am now into Specialty with some nice gains (I have been setting season, 2021 and all-time power PRs this week and last!).
New functionality for linking outdoor rides looks like it will be a good help especially for the Z2 ones that I like to do outside. In future, when AT can finally work with any power trace, I expect I will be more likely to go out with a set of goals in mind (i.e., hit these 3 climbs at threshold), and have AT deal with it rather than mess around trying to find roads to follow the workouts exactly - something which is quite hard from where I live.