This formation is awesome and was originally allowed with my house rules. However, as I started using it more and more my yards per play were complete dominating every other formation so I eventually house ruled it out. The basic problem with this formation (at least vs CPU) is that the cpu tends to treat it as a 4 WR spread so you get the soft defenses (DB intensive) but then you have the extra TE to block with and you can really run with this formation.