I agree with you, certainly beneficial.
I didn't answer your original question on Hack motion, but I think this would be a quicker path to the same destination. You get immediate feedback if you are performing the intended motion correctly from this. Hack motion was way more complicated (and provides tons of data that I couldn't decipher on my own) and would be harder to determine when you are "in the slot" so to speak.
Both I think would be better as something you work with your instructor on, but the prosendr seems easier in my limited experience with Hack Motion for a novice to learn with.
This is all just from my little corner, so take it for the very little it is worth.