Wondering this as well.

The problem I'm having isn't with stealth level myself, it's the fact that while running some hard modes and normal flashpoints some of the bosses and normal enemies can see you way before they see non stealthed classes. If I'm standing behind my non-stealthed friends in a flashpoint.. I find it awful ridiculous for the bosses to be able to see through stealth and notice me before them (as they stand.. visibly.. right there). I don't know.

Anyone else getting tired of running hardmode flashpoints and while being stealthed get noticed by bosses/trash even if you're behind your other teammates? I just don't see why I should be seen that far away, when those who aren't stealthed get aggro when they're closer than I am. Would also be nice to have some sort of icon over enemies when they have the ability to see through stealth. Isn't exactly fun to see an icon over your head when they start to see you. Knowing that you have to get out as soon as you can.