No. The point is to have a consistent layout after the break.
And guess what happens when you rack the balls in the same pattern each time? Some patterns produce easier layouts than others. Hence why pattern racking is illegal.
As far as using pattern racking to make sure balls aren't tied up. Well that's a first. I guess I always thought how tight the rack was played the biggest role in determining the openness of the layout.
Probably why we use templates
Well, there's more to it than just racking and breaking the balls if you were to ever really put in the time to study the break. Knowing where to place the balls in the rack is just important as the speed in which you break the rack, as well as where you break from, and as well as where you contact the rack on the break. It's much easier to hit the 1 ball with more accuracy if you're actually aiming at a ball behind the 1 ball and catching the 1 ball in between that aiming point. I learned pattern racking a long time ago when I would spot other players wild balls to win on. You can't just give the wild 8 or 7 to someone then let them break hoping the 9 or wild ball found a pocket on the break. Placement of the wild ball was very important to try and reduce its chances of being made on the break.