Is using stealth an exploit?

[Quark]

If they want to stop it they will add flare popping patrols in those "skipped" areas to prevent stealth, much to the consternation of those classes that rely on stealth.
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Every time I see a dog in BRD or Dire Maul, I get frustrated. Rogues have the only CC (If I'm remembering correctly) that can't be applied in battle. And those damn dogs prevent us from applying it. You can use opening moves in battles with stealth-seers, but it's quite annoying because you have to let all the mobs aggro first, then position afterwards.