First I'd like to ask the question if anyone has noticed they have increased the time of refresh on Paragon since the revamp of AA window? If i remember correctly the timer was cut in half when Aura of spirits came out but now it seem to be right back to a 15 min refresh timer. It doesn't make too much a difference to me but it was nice to get my mana up a little more quickly after a wipe or that extra boost while soloing.
it was never changed, its always been 15 mins, the whole life of the AA line
As Humlaine said Paragon / Perfection / Aura, are all on 15 minute timers, they've never changed.
Wipes always seem to make every refresh time a bit skewed, but those timers are still ticking away even if you're floating above your body.