Why are you even here then? Every single game that inspired PE had boob armor or worse (better?). Hell, PS:T had pretty much every female character looking like a super model hooker. If you're actually being serious then the "experience" would have been ruined for you from the get go in each of those games and you wouldn't be a fan of the genre.
I think it should be like a smaller version of some of the evil planes (Acheron, Carceri, etc.) with each level becoming more and more twisted and odd looking with the lowest levels having impossible Escheresque architecture and the very bottom should be an infinite expanse containing an eldritch abomination. Also strewn throughout should be the bodies of former adventures with the corpses becoming fewer and fewer as you descend into the depths.
A sense of mystery that persists even after the game is over. In PS:T you never learn your name or what your original crime was, but that's okay. On the other hand, once you learn the truth about the Reapers in ME3 it kind of takes the fun out of it (they were a lot more interesting as eldritch abominations).
Also no depressing endings or forced drama that's there for the sake of "art." **** that noise.
I think it would be better if the PC was more mundane, so to speak.
However, I'd have no problem with one as a companion. Hell, some of the best parts of PS:T were the crazy companions you encountered.