Well in case anyone's looking to add the info to the wiki - it kicked off when above 75% everywhere. Also, when you get high enough, the redundancy levels go really screwy in general. Either that or I'm looking for completion and it keeps prioritising my rare race/class combo's over "what you played where", so more runs end up being redundant completion wise than not.
Also, I don't mind vicious PQI kicking in at 75% (you're hardly a newbie if you have that much, that a lot of runs). However, if it's prioritizing stuff you haven't played elsewhere it's sending you up a creek without a paddle. Miser Transmuter Gnome took me a big bunch of tries, and I'm not exactly inexperienced. And I only had a gnome wizard run in there, so it could've picked anything at all.
I almost got pwned by Shifty Brickwork!