If you look at the more recent videos from that guy, it seems he relies mostly on Hook and Goon skills:
While having a lot of skills from those 6 classes in one build may have worked well in R7 — the same build has taken its toll due to R8’s powercreep (probably doesn’t apply to clerics).
Now, the time required for you to land these CCs and debuffs (if they do connect) is oftentimes enough for an enemy to burst you down. Also, due to transcendence and 270-315 gear, unless you can match their gearing too your damage will be significantly mitigated.
Then comes 5v5 which by R8 just went full steroid. Here are examples:
As I always say in other threads, it’s nice to be different but there’s a reason why meta builds are popular. They’re effective for their purpose.
Players who are aware how hook works can more than half of the time dodge it my jumping around or catching the Corsair offguard first, and a lot of players know how to spectate in-match now as well as use /memberinfo so you’ll rarely be able to surprise them with it.
Hook has max 3 targets and IIRC (unless it was changed) will also consider pears, caltrops, pets and summons as targets - and there’s a lot of that in 5v5 and GvG.
If Corsair had other skills worthy to completely replace Spear Throw besides Hook, I would’ve gone with picking at least a circle in it. Spear Throw is just too good to pass with its true triple multihit, bind attribute and spammability.
Still, if you’re really bound to go with a mostly PVP Goon build that has Hook, then I would follow this:
You might miss out on Spear Throw, but you still have Stabbing (with Spear Lunge it’s actually really good against tight groups) for some AOE besides Serpentine, Soar and Dethrone.
It’s also important to consider that Long Stride has a very long CD (nearly double that of Hook) and will knock enemies away from point of impact (even if they’re hooked).
I feel like temporarily letting go of your shield to use Corsair skills besides Hook breaks the build’s synergy with Pelt and Finestra.
Hope this helps!