The reason we don't see plays like this manifest themself in the league often, is because the risk is so much higher than the reward. A team -- by developing a trick play to pull the wool over other teams eyes -- opens themselves up usually to a counter attack or a team taking advantage of the play not going as planned. This means that is more likely that the team will not benefit from this play as much as they will lose out. There is also another major factor. That the league is generally an old boys league. If you fail to make a trick play work, the pundits, analysts, and other coaches and GM's will ridicule you or talk about what a dumb idea it was. When it works it is rarely talked about but when it doesn't, everyone talks about it. It's a never ending news cycle (like when Torts went on a tirade about Zegras trying the Michigan all the time)