If you have played templar this patch in pvp, you can probably already agree that both morphs of backlash are at this point pretty much completely useless for pvp. Assassins will, shalks, and blastbones (mostly comparing to the other stam classes as i cannot speak for mag) are literally ages ahead in terms of burst and ease of use. I can put my full combo into someone and potl will crit for like 5k. And that requires me to be constantly be beating on someones dome piece. Not just some fire and forget like shalks/blastbones, or something easy to build up like assassins will (yes i know assassins will is hard to land with travel time, but there needs to be some counter-play to an ability that can hit you for 4-5k through block)
Not only does it not scale off max weapon/spell dmg like every other burst ability, it's also double hit by battle spirit. And even if it wasn't it's one of the hardest burst abilities to use in pvp with very little reward. So...what should be done?
Completely overhaul the skill. The dmg replication has always been a mess and its single target nature doesn't even match up well with the templar toolkit which is mostly all aoe. I believe the easiest thing to change it to would be something like haunting curse. Have a dmg aoe that explodes outward, with an 8 meter radius (jabs is 8m radius, solar barrage is 8m radius, spear shards is 8m radius. Just makes sense looking at the rest of the toolkit). Have it be a delayed explosion after 6 seconds (just like current potl), dealing 100% dmg to the target and 35-40% dmg to all enemies within an 8m radius. For the stam morph the explosion could major fracture (or an other debuff for that matter. I just want major fracture in the class toolkit lol) on all enemies hit, and the mag morph could heal u for a percentage of the dmg done as a burst heal instead of a HoT. Make it scale off weapon/spell dmg and max stats, make it blockable.