I love this ability.
I almost fills the gap that Strike of the thunderlord left. I even tempts you to choose serenity rather than WDP and it doesnt feel like youre missing something.
Id still like to see WDP baseline next expansion with the top tier of talents being Strike, faeline stomp and then somehow combine Serenity with weapons of order.
For Mistweaver id like Faeline stomp to shoot actual bolts of essence font and cause the hot which in turn could proc the Fistweaving leggo buff.
It would fit in nice with fistweaving without the need for using essence font. Make the leggo 30-40 yards and smart heal as well as adding a conduit that increase faelines healing part and it would feel really nice!