Nocturnal's Ploy would have been a problem if it hit live with it's original design, but I think the idea of adding buff stripping to the pvp side of gameplay would be awesome if it was well supported outside of one set.
Why is buff stripping cool?:
It's another tool in the tool kit outside of damage, sustain and survivability. In a game like ESO (PVP at least) where buffing is almost 1/4th of what you spend your action economy on Buffing, Buff Stripping can give a player an incredible amount of control over another player. You can force them to reapply their buffs or take the risk of fighting unbuffed. Fleshing out a buff stripping system could open up an entire approach to build design and combat between players that hasn't existed in this game yet
Why buff stripping didn't work for update 35:
It was introduced as one 5 piece bonus. No other skill or set can buff strip, Oakensoul builds would be unstrippable without consequence, it would render brutality/sorcery inaccessible to some classes unless they slot a two hander, and it could effectively double dip by replacing a buff with an equal debuff. The game wasn't ready for it.
What might make it work better in update 3X:
-More than one way to strip buffs. at least two classes should have a skill for it and an unlocked skill line should offer it (rework elemental weapon or the MG dot with a hot?). There should be more than one set that can give a buff stripping effect as it's 5 piece.
-More than one flavor of buff stripping. Maybe one effect steals a buff, another "detonates" a buff for some proc damage, another can remove multiple at the same time on a longer cooldown, and another can remove one at a time on a short cool down.
-a punish for perma buff users. There's a huge hole in the system if one subset of very strong builds can side step it. Maybe these effects could apply damage or a rare and potent debuff if no buffs are removed.
-No stripping potion buffs. Those cost gold
-make major sorcery/brutality in particular accessible to all classes as castable buffs, without slotting a two hander
-Have more actions and skills passively generate buffs. Like how most (all?) classes have a minor buff they share with their group just by doing their thing.
-avoid the double dip effect by not tying it to debuff application.
side note: I wonder how difficult it would be to create sets designed to be back barred that proc on weapon swap?