So, you want a free "Arcane power" buff every 15 seconds. If you do the maths, you will see that you are asking for an almost permanent buff to arcane just by following the intended rotation. Scorch weaving is just an invention of Arcane Mages "exploiting" in a way the mechanics of Arcane so they keep up the 6 charges for ever... this is the reason that Blizzard is changing this. Have a look what happened to fire spec!