How is this even physically possible? I don't mind interviewing usually but 2 or more a day, every single day, sounds like pure hell. Not to mention that after not touching any code for a whole year I'd be questioning your ability to be doing technical hires in the first place.
I'm very skeptical also that this ultra-standardised approach is getting anything like what I would call "top 10%" programmers. Top 10% of people who happen to do well in this particular interview setup, morelike. Teams I like to work for have a healthy mix of abilities, passions and experience. This sounds like a recipe for a room full of dull clones, none of whom have any knowledge outside a strictly specified little box. What next, psychometric screening?
I do agree with one point though - 3 people in the room is probably the right number.