Max Mana, mana regen, and you!

[MartaDemireux]

SE stated somewhere that MP restored over time is directly related to the max amount of MP you have, it may have been in a dev note somewhere. However, be sure as THM that you do it with your weapon drawn as well as in passive mode so you can measure the difference between your MP-Restoring job trait and your natural restoration.

I say this because I'm not sure if the job trait is a static amount, increases as level increases or is based on max mp amount. I'll likely test this next time I log in but lately I DC whenever I walk by certain spots in Ul'Dah that I haven't even bothered logging in.

Edit: Also try /sit to see how much that increases it. See how much it increases exponentially as well (fairly certain it does it here too, sort of like XI did).