I have actually been doing this for some time now, adding 1w each week. Been working well thus far 
As I am rinse and repeating SSBMV1 & 2 blocks then I am able to fairly consistently and frequently compare the same workouts to see how my heart rate stacks up against power numbers for each workout and its respected intervals.
For the time being my heart rate levels are either exactly the same or even lower during the same workouts weeks apart but with higher power numbers. So effectively I am getting more efficient at producing power at a given HR level, or being able to produce the same power but at a lower HR intensity. Whichever way you look at it I am doing some sort of progress. I think… 
