We should also include int/mp5 in our weightings (perhaps in two minute chunks). Although alot of leather is quite rated quite highly in the lootzor link, I think my back of the envelope calculations showed that we shouldn't neglect Int/mp5 completely:
[Shaman] Itemizing Enhancement at 70 [Shaman] Itemizing Enhancement at 70
It may be that, at higher levels of gear, the percentage of damage that consists of Shocks will be so low that it's more worthwhile to just gear without thought to mana and reduce the number of shocks. But, at my level, with 0 spell damage, shocks are still a significant portion of my damage (~156 dps with debuffs). Since I am at the point where it is possible to run OOM during a full burn cycle, there must exist some equivalence between extra mana vs extra melee stats.
AP and +hit has the advantage of doing double duty of increasing melee damage while boosting mana gains, but relying on SR completely is also not always optimal. Timing SR with a trinket maximises mana gain, but you have to time it when you can be certain you won't waste SR procs. However, in many encounters, there exist damage windows where it's optimal to save your trinket for. These two scenarios don't always occur at the same time.
With a full burn DPS cycle being estimated at least ~13k mana per two minutes, we need to consider the question: What is the optimal ratio of intellect and mp5 to melee stats?
This will be a multivariable function which several critical points exist. Some things to consider:
-Does there exist any itemization points where the additional melee damage outweighs being able to shock every cooldown?
-If there is not, what is the minimum mana pool, mp5 and mana from SR required to sustain a full burn cycle.