you're not doing yourself - or others - a favour if you keep using duty roulette and keep being thrown into sastasha and so on. it's actually kind of annoying when I go on my .actually. lowbie character/class, would really like to get all the chests and so on since I can .use. those things, just to have 1-2 higher level characters burning through the run, and when you ask them to slow down they are telling you that they are bored of it and just need the xp because they run it x numbers of times a day (and pointing out the randomness of the roulette)

they don't .know. that I'm actually an experienced whm when I play on my lowbie char conjurer. a new character would be completely lost with that type of 'speed running' where sastasha takes 15 minutes.
(and I let a tank die on purpose a few days ago because he ran straight for the first boss instead of following the two dps and myself, going for the chest)

that's not the purpose of the douty roulette, you're just using it like that. if you want fast xp, please, use the new party finder.