How exactly has pvm been adversely affected again? The 1 player being able to kill anything should end. This game is already far to easy in pvm, making it harder is not adversity, it is diversity. Doing anything becomes a grind instead of a challenge. I do not see a single skill that has received or will receive a pvp nerf that has made it useless.
The repeated changes to Special Moves are good examples of how PvP changes have hurt PvM.
First of all, the addition of the Tactics requirement was a ham-handed attempt to limit special moves by oddball PvP templates (typically ones not relying on damage as much as the side effects of the specials - ironically, the skills that were being abused were NOT made Tactics reliant, but checked different skills, in the final design).
This was later followed by the JOAT nerf to special moves. We were told when ML was released that the JOAT skills counting toward special moves was an INTENDED effect of JOAT, to give a reason for people to play humans instead of Elves.
Note that the "able to solo anything" PvM gimp templates DON'T USE special moves, relying on DI and leeches to keep the opponent monsters being damaged, while healing the attacker. Hell, most of them don't even use HEALING, let alone Focus or Meditation! So, these changes were NOT meant to be a Sampire nerf.
Those two obstensibly "PvP" changes had the effect of making any PvM combat template that wasn't an Elven Samurai/something (usually necro, but I've seen people experiment with a weaver or Mystic) an exercise in futility, as people look at those of us who DON'T WANT the "solo everything EASY Button" as a template like we're some kind of idiot for not turning our characters into one of the cookie-cutter Sam-elf templates.
Even things as simple as making Chivalry count toward special move costs, having the Tactics requirement be based on modified (not real) skill (while keeping the real weapon skill requirement), and/or having a toggle sense whether the target of a special is a PC or NPC for mana consumption, would help balance out that disparity.
The solo-anything templates would be tempered by making it to where you could only have 150 total points (modified) combined in the skills Bushido/Chivalry/Necromancy/Ninjitsu, and making the Necro-form leeches be based on (Necro+SS)/2, not just SS-based.
Frankly, Bushido/Ninjitsu & Chivalry/Necro are polar opposites, and Ninjitsu would be as offensive to a Paladin as Necromancy to a Samurai, as violations of their codes of Honor.
Ninjitsu & Necromancy aren't all that compatible (what's subtle and stealthy about the Walking Dead? Ninja are supposed to attack and never be seen - while necro alternate forms and their summons are things civilized types usually attack on sight).
Bushido & Chivalry's code of Honor aren't all that compatible either (personal & liege honor, vs. living a humble lifestyle honoring what is good, not seeking personal glory).