*DISCLAIMER* While I will be mentioning the grind for trial sets with Minor Slayer for the 3-item bonus, I AM NOT STRICTLY OPPOSED TO IT.
Everyone knows that, if you want to be a serious PVE DPS or Tank (in other words, veteran trials, DLC dungeon hardmodes, VMA, etc) you will have to run at least 3 pieces of a set that grants you Minor Slayer/Aegis (5% more damage given or 5% less damage received). This means you only really get to choose one set for your build and your monster set. This is extremely limiting.
What if I, as a sorcerer, wanted to try running 5 pieces of Mad Tinkerer and Netch's Touch? I could do that, but then I would lose Minor Slayer and my DPS would probably plummet straight into the ground. Same thing if I wanted to try running Netch's Touch and Necropotence, or Necropotence and Mad Tinkerer. Because Minor Slayer exists and can only be obtained through trial gear sets, my options are really only "do I want to fun Infallible or Moondancer with my 5 Necropotence?" That's not a choice of any real consequence.
Another example: I can't try running 5 piece Silks of the Sun and backbar-proc 5 piece Burning Spellweave on my magicka DK, because, again, if I did that I would lose my Minor Slayer and having both of these sets would probably still lead to a DPS loss on the one class in the game BOTH of those sets were basically designed for.
Minor Slayer/Aegis, as trail-gear-only passives, completely stifle build creativity for serious PVE players. Yes, you could PVE without it, but you will either never complete any content harder than an average veteran non-DLC dungeon or it will be monumentally harder to do so.
The grind for trial gear is also so much harder and longer because you can't just jump into a trial via group finder. You have to actually network and/or be online and in the right guilds and zones to catch a trial group forming or try to build one yourself. You also can't buy trial gear because of the trading limitations. I STILL have moondancer pieces I need even though I've run normal Maw at least 50 times, because it's such a crucial set due to Minor Slayer and very few people don't need to worry about it anymore.
I don't have a solution to propose to fix this, but even if I did, it would be highly unlikely Zenimax would do anything about it.
Edited by Dapper Dinosaur on January 7, 2018 1:28PM