First off, I like the changes that have been made to DDO's stealth system. Being able to jump while hiding helps to avoid mobs, and even if a mob detects you can lose him eventually instead of being followed until one of the two is dead. Awesome job, devs!
Unfortunately several quest designers do not seem to like this and forced me to seek different ways on my rogue, including human sacrifice and exhibitionism:
For example when I soloed A Lesson in Deception I came to a wooden gate. I could not climb over it and I could find no mechanism with which to open it. Only after I let the streets run red with the blood of a nearby group of humans who sat around a fire the deity of doors was appeased and opened the gate.
Similarly, in The Tracker's Trap there were several magical barriers which could only be suppressed by sacrificing the souls of sentient beings (orcs iirc).
The weirdest thing, however, occured to my rogue in Through the Mirror Darkly: At several places I had to look into a tiny mirror (0.01 lbs weight) to advance the quest, and apparently I'm so vain that after "gazing into the mirror" (floating text on activation) I just had to show myself to everyone else in the room, as using the mirror broke stealth.
Now I do not ask for all quests to be modified to accomodate stealthy players, but having to kill a room full of mobs before it's possible to proceed is lazy quest design imho, and so is breaking stealth by using a tiny object on yourself that is in your inventory to begin with.