First, this is just what I think. Opinions are widely varied, but I'm pretty sure this right here is the issue for why the game has lost most of its challenge after the patch.
Look at your old gear versus the new gear.
Currently, there is zero reason to use the new gear except for experimentation. Sure you might gain a stat or two, and the def is -amazingly- higher, but you lose so much padding compared to the older gear.
Example
Menace Tunic Gloves:72 str, 51 vit, 388 def, 56 crit, 100 haste, one rune slot
HV Tunic Gloves: 70 str, 30 agi, 21 wis, 89 vit, 179 def, 21 hit, 158 vigor, one rune slot.
Sure, the new gear gives you more armor, and slightly more damage output via the strength, but you lose 570 hp base, along with crit score, accuracy, dodge, and sp pool. And with the way seemingly all gear works that has a ML requirement, stats are slightly higher per piece, but only certain pieces have that stat. (also lower damage on the weapons. I mean... the ML11 rogue blue dagger is over 100 base damage lower than the honor knightage one, come on) I get the distinct feeling that the stats were not looked at in comparison to anything but each other in the new, post-ML world, and not at the older gear which in many situations far outstrips it. This also explains the plainly disgusting amount of hp anyone has, as not all ML gear gives vit, but all pre-Morroc gear does. And since most people continue to wear the pre-Morroc stat gear, they have far too much standing vit to make anything a challenge, up to and including Morroc itself.
The best way to fix this, and yes people will hate me for this but if you want a game to be stupidly easy there's private servers somewhere, is change the pre-ML gear to have the same stat setup as the Master gear. Four stats per item (maybe more, depending on the piece) instead of six or seven, less floating vitality, more heavy thought required on building your character. Personally, as soon as I can make/afford a full set of the rogue gear, I'm going to switch to it, because I want the pure challenge of taking on the harder areas with less padding.