We would definitely make sure those updated on the fly -- I didn't recall that there were any enchants that adjusted mana costs, though. If that's the case, then it's just something I need to re-plumb a bit. The stats that are shown normally "just work" in terms of showing the adjusted values, because we're using the actual values that are used for combat calculations themselves. Except, apparently, in that edge case.
For DPS, DPM, and DPSPM, check me on this math:
DPS: attack / cooldown
DPSPM: DPS / mana
DPM (not shown above): attack / mana
Obviously the first and third are straightforward, but my brain is having a fuzzy moment with the DPSPM, wondering if that's actually useful calculated that way. Thoughts?