Hello.
Sharing couple of ideas regarding ,,Sovereign Shout " ability.
1)As always, skill info should present buff duration.
2)What i find bit annoying is cast time animation. Buff starts like 0.5 sec before i can start hitting something and i consider this dps loss. Solutions are ether buff starts at the end of cast animation or to lose cast animation.
3)I am using ,,Hold the Line" modification with shout and when i counted seconds,then attack speed buff last 5 sec and all-resistance buff 10 sec. Not sure if thats how it should be because no buff duration is marked.
4) When using buff i only see ,,Attack Speed increased '' buff icon but it should also give ,,Cast Speed" buff. Don't know if i cant see it because i am only using melee skills.

Have a nice day and share your opinion regarding the buff.