Yeah
For a Zerker I see
For a Hdin I dont understand and have never liked it

Agreed for me its mostly a barb palace cause the mobs have low life and low def

Or good for levelling if you play solo, no dia/baal runs on and you level 60 any char can clear pit more or less easily
As soon as you're 70+ imo chaos all day long unless you a barb and you stay to pit & trav

Because you can get to it more reliably than almost all other level 85 zones (maybe save the chaos sanctuary) by following the path from the wp and turning inward at the first fork. Also monsters are weak in a1. Speed > all so pits are A tier if you have a build that works there.

The boss run only good if u fast at reading map and tele. Otherwise just kill demons in any tz will work out better for u most of the time