Can you just replace Manaflow Band with the old Meditation mastery?(For consistency)

The nerf on PBE puts the cooldown of Manaflow Band at 75 seconds. I think that simply bringing back Meditation(+1.25% missing mana every 5 seconds) would be far more consistent than randomly restoring 8% of your missing mana and refunding an ability in the midst of a teamfight, and some abilities cost more than 100 mana making Manaflow Band too strong.

With Meditation and 400 mana at level 1 the maximum amount of missing mana you can regain after 1 minute is 75. With Manaflow Band and 400 mana at level 1 the maximum amount of missing mana you can regain after 1 minute is 32 plus the cost of any ability will be refunded. This means the total amount of missing mana you could regain ranges from 72 to 132 or more.

So the change would be Meditation - +1.25% missing mana / energy every 5 seconds.