Ok, why use /castrandom rather than /castsequence? That doesn't seem efficient to me...?

The Seal of Wisdom idea is a good one - I'll have to give that a try. The idea of downranking spells won't last long, Blizzard will have that removed by the time Wrath comes out, so I won't bother doing it down only to undo it later on (and get grumpy about it).