You were (mostly) granted this on the ISBoxer Discord (no camera), but for everyone else, here you go (with terrible audio quality).
For me, everything up to the final boss of Arcatraz was quite terrible, so nothing's changed there, and Auchindoun has the very difficult beholder boss that can be a show-stopper (unless it's been nerfed, I don't know). On the other hand, Cata dungeons can go [redacted] right in their [redacted] for the [redacted] [redacted] that they are. Finally, I don't think I've multiboxed all of the MoP dungeons, but I've probably done most, while leveling. Right now, they can definitely pose some challenge to those who aren't familiar with them, so we'll have to see how the end up after the squish in SL.
I can dig it, and I hope it stays.
Okay - I figured that something had to be put in place for the less desirable/populated timelines, where the available dungeons are likely going to be somewhat dormant/avoided.
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