I won't name them but literally all the top MMO's around figured the fact that PVP and PVE should never collide years ago, in fact, the most popular one did it before ESO was even released.
Yet here in ESO, we still having this problem where some classes made useless in PVE (Nightblades especially) because in PVP people don't know how to handle them.
And by all means, the entire game and classes are balanced around PVP mainly and PVE is a sidekick, which is inconceivable, should be exactly the other way around, especially considering the content difference between the two.
That said, just like in other MMO's, PVE gear should become OBSOLETE in PVP and PVP gear should become OBSOLETE in PVE, that alone would solve most balance problems in PVP and make it much easier to balance around.
At the same time, in NO WAY shape or form, abilities should be nerfed in PVE because they are OP in PVP and vice versa .. those 2 worlds should never collide.
Don't like a specific ability in PVP? either disable it or tune it down in PVP, aka make it have different stats in PVP as soon as you go into a PVP area.
Honestly I am really getting tired of explaining people the obvious fact but there is just no justification to ANY of the nerfs Nightblades had in the last 2 years PVE wise, the class literally got butchered and killed in PVE repeatedly because of PVP reasons. (Though this post is about all classes not just NB's)
In additional, people need to understand that ESO PVP and ESO PVE are 2 different games under the same title, therefore a balance between the 2 is practically impossible, not the same rules, gameplay or content in any shape or form.
Please don't ignore this post, this is the biggest reason this game is not appealing to so many people, I know so many friends over the years who went away specifically for the reasons above ..
Thanks for reading!