I am not a huge fan of Shiro and I don't like the fact that his kit overtaken the Revenant PvP scene. But at the same time I don't think these changes are ing to help Revenant overall.
Jalis' main problem was his huge energy costs. And we are going the same way with the Shiro.
My suggetion: Reduce functionality of Phase Traversal and Riposting Shadows, not increase their energy costs.
What do you think? I personally don't want to find myself not using the legend because of its' huge Energy costs.
My fan reworks of Revenant's legends: