Which is the most braindead content currently?

Inspired by a post on this sub reddit, that someone had in 5 days gotten to level 99 without killing kitava act 10. He said his rules were simple: never die and never ever stay in a city or hideout for more than 60 seconds.

That got me wondering what content in your opinion is the most plug and play, that requires as little planning and thinking as possible?

Also what build would be good for that content?