I had an idea on what to replace Meditation and Shoha with.

[NobleEinjerjar]

(insert Japanese name. Let's say...Sushi)
Attack with potency of 500. Can only be used after landing three consecutive critical hits. Not affected by GCD. 10 second Cooldown.
Overpowered? Yeah probably. Infinitely more viable than meditation and Shoha? Yup.

[Taranok]

Good luck getting 3 crits in a row consistently. But your point is valid mostly because the devs for some bizarre reason thought it was a good idea to copy Monk's Chakra system from HW, which the devs gave a crit-based recharge system to because the old system was bad.

Makes perfect sense to copy a system they augmented because the original that they copied was bad.