One of the reasons why it interests me is that it looks like a nice transition program from 5/3/1. With 5/3/1, I felt like I was only getting stronger on the last set. Like everything was a warm-up to that last set to failure.
With Cube, it seems like I'll be getting stronger in multiple sets. My conditioning will improve. And I also like the idea of having a fixed number of reps. It creates that goal in my mind, like I have to hit that number of reps.
That's not to say, I'll limit myself. If I have the extra reps in me, I'll do them (especially on the heavy day), or I'll add an extra set with reps to failure if I think I can do it.
I'd love to get into a program like Sheiko or Smolov, but I'm not to the point where I can do something that rigorous. And I'm not sure what Lillebridge's program is like, and I don't have the $150 handy to purchase it.