So I don't disagree with your assessment that ideally I'd run more volume, I just think I'm nearing my current limit on volume given my limitations. I don't think dropping a few more tempo sessions would allow for considerably more. Ileage.
Interestingly, Stonecutter had the opposite view - he thought I was too committed to high volume (and to certain workouts).
Driveby post to clarify my position. Principally, I agree with too hot’s assessment on page 13... That what does most runners in is “the combination of volume and intensity.” Placing too much in both categories forces any runner to break down.
My suggestion to you, in light of you breaking down before Boston, was for your next cycle to consider dropping the total volume from 80-90 mile/week peaks, to steadier 60-70 mile/weeks with progressively targeted pace workouts. Moving away from your preferred model of insisting on hitting three different 13 mile MP runs throughout your cycle, as I think that model prematurely causes you to peak before the goal race. My implied contention is that extra easy volume (on top of repeated strenuous long workouts) was unnecessary...you had enough lifetime miles in your legs that you didn’t need the extra volume IF YOU ARE DOING MORE FOCUSED WORKOUTS.
But too hot’s model is an equally valid way of solving the too much volume/too much intensity problem...
Drop the intensity of workouts for a long extended volume building base phase, and then sharpen with maybe 6-8 weeks to go before the race. That model perhaps more safely elicits maximum aerobic gains without the added physical stress on your body due to form-related issues.
I think too hot and I would both acknowledge, though, that there is also something to be said for personal comfort level...i.e., what do YOU BELIEVE IN and what training do YOU LIKE TO DO.
No matter what you decide, continued wishes on your full recovery and your future successes.