Regarding critical damage with the revamp

Hopefully, there are still 0wdef mobs around, like Green Snails perhaps, that would give really solid results.

Sort of can do cap'n.

Green snails do have 0 WDEF (actually unlisted PDDamage), but there's another variable thrown in the mix - MDRate and PDRate. These variables are set to 10 for green snails. So keep this in mind if there's any strangeness in calculations. All mobs have PDRate and MDRate so there's no escaping it. However, not all mobs have PDDamage and MDDamage.

EDIT: Both Green and Blue Snails have perfectly similar values for PDDamage, PDRate, MDDamage, and MDRate. Red Snails are not suitable for damage testing because PDDamage and MDDamage are set. All white beginner cygnus mobs are also suitable for damage testing.