As I see Anet is looking for Wvw balance change, i wanna point out something to be considered.
As Stand Your Ground has been increased the target cap from 5 to 10, this makes Firebrand in wvw has less responsibility to the party.
If one Firebrand makes mistake with the stabs, others can compensate it. This makes wvw gameplay have less coordination, instead it encourages 'getting carried' gameplay.
This also makes CC skill useless because ppl usually have 15-20 stabs with 1st engage. It's impossible to cc them. The only way to counterplay it is to corrupt or bait it by pulling back and wait till it's gone.
I suggest Anet put the 10 target cap into a trait called 'Pure of Voice' so that people still have an option to decide if they wanna take Pure of Heart (current Fb meta trait for wvw) or the 10 man stabs. This will keep the 10 man advantage for pve aspect aswell. Ppl can still have stability coverage for the whole pve raid squad if it's needed.