More than squabbling about RR abilities, i would be more concerned with getting a better Mastery Build, like this one:
https://officialrorbuilder.herokuapp.co ... ,3531,3542
Now, this build offers everything you spec in the AoE tree for, but instead of softly increasing the tooltip damage it offers an increase in viability, since you get the option to use AoE range on your enemies(FBB, Blast), more burst potential, a lvl 4 morale that's actually useful(AoE 1.8k nuke with a 600 morale drain and a 2.4k nuke on main target) and even more sustained damage output since FoR now hits for a lot, while also proccing 75% of the time, Funnel hits for more than usual too(And that procs every time) and the skills themselves cycle better since you can now Anni, FBB, Anni + Every other skill you would have used before with the full melee AoE BW.(Maybe we get to stop the idiotic RoF spam. RoF is a mid-tier ability at best, stop using it continuously.)
Now, i've proposed this build and the main complain was "Yes, but you lose time casting Fiery Blast".
Yeah, that's because you're using it incorrectly.
Fiery Blast needs to be used in the following instances:
You need to hit stuff that's far from you and can stand still.(IE: Funnels, standoffs, preparing pushes)
You have FlashFire active and people are running away, you can cast it while still running at them since FlashFire allows you now to cast the skill while moving at half the normal cast time.
You need to move away, FF is active, back off/reposition yourself while still casting.
As for melee encounters, it plays exactly like the build you are already playing, it just gives you more options to use.
Also, this build provides an amazing combo, especially with other BWs running the same spec.
Blast till someone disrupts.
Blast again for 1.5 Blast, follow up with Choking Smoke if it's a necessity(IE: Healers in range with pesky heals), Follow up with BH into FBB.
Alone already this combo deals a bunch of damage while also draining 600 morale from everybody hit by it.
Now, get the other 3 BWs in your WB to do it in a semi-coordinated fashion. Enjoy opening a huge hole in their frontline.
I am indeed too lazy to get the tooltips from the abilities from both builds and link the values here, but I invite you to do it yourself and see.
P.S. I included Spreading Flames because some people may like it. Personally, while i like the skill too, i'm still unsure if i want to pick Nova over it for quick Combo building.
Keep in mind that DoTs while reaching the fight are your best tool to fish for "Disrupts" so you can follow up with Fiery Blast while covering the last distance between you and them before Anni.