How to Dragoon Per Second: A DPS Paradigm

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Gotcha. Here's what I came up with:

Say a non-critical hit deals D damage (substitute in your formula for weaponskill, auto-attack, or DoT damage), and c = crit - 354. Then:

Expected Damage = D * non-crit chance + D * crit chance * crit damage multiplier
Expected Damage = D * (1 - crit chance) + D * crit chance * crit damage multiplier

crit chance = 0.000233 * c + 0.049511233
crit damage multiplier = 0.000233 * c + 1.4493610

...wolfram alpha magic...

Expected Damage = (5.4289e-8 * c^2 + 0.000116237 * c + 1.02225) * D

Take the derivative with respect to c:
(1.08578e-7 * c + 0.000116237) * D

This gives a formula for how much we should expect damage to increase for each additional point of crit, given the current crit value (where, again, c = crit - 354). At higher values of crit, each additional point increases damage by more.

I don't know if this is useful at all to you but I was bored at work and figured I'd share.

EDIT: I think WA did some weird rounding first time through.
Updated formula which includes critical chance buff here.