Why not? Cowboys did it

Anyone see the formation the Cowboys used a couple of times last nite where they had Barber, Felix, and Choice all in the backfield at the same time? I don't care if you use JJ or Shep but how effective would it be if you had Scott up the gut (give or fake) w Keiland countering off tackle (give or fake) and then have the qb run option w Trindon (keep or pitch)...Instead of rotating all these playmakers, put them on the field together...I know you cant do this the whole game but I would think Crowton could concoct some sort of package like this that could be killer. I would think that could set up a one on one opportunity for the one split out receiver....i know there were some wet dreams about this in the preseason but would someone please tell me why this couldn't be a reality?