Probably not much of an accomplishment these days, but all the "tanking EE mobs - impossible" stuff in this thread:
made me want to see how my tank does against the yuan-ti.
Dragon was ranged (holy **** that thing has a lot of HP. If I hadn't been able to go AFK, I'd have given up, I think it took nearly an hour), the rest was pure melee.
I had to reenter because I foolishly burned all my boosts and haste clicky on the last yuan ti encounter and actually didn't have enough dps to outdps the last priestess'es self-healing (true seeing apparently doesn't help against concealment, and I kept getting stunned, none of which the first priestess did so I didn't expect it), so after 10 minutes I decided I didn't want to redo it and went to refresh those / pick up the +damage ship buffs. With that she died fast.
What surprised me the most was the fact that I was able to sustain my SP/self-healing with Torc+Conc Opp against the Yuan-ti groups (although I did have to be careful and keep repositioning myself so I don't get hit by all of them until they were down to 2-3).
Although as my much worse-geared wizard did it in 30ish minutes I wouldn't exactly call this a worthwhile endeavor.
Honestly I wished I had gone in as legendary dreadnaught. Tankyness+self-healing was more than needed while DPS was terrible compared to LD.