In closing, I like the new fights, they're cool and fun. However, it's hard to motivate people to do them once and very hard to get people to do them again and again because the drops aren't great and it's very difficult and time consuming to even fight them in the first place.
If there was a baby d. ring or -15% dmg reduced body armor or something that dropped from these fights it would be a different story. Seriously though, don't you think something really good, that's better than other older stuff should drop from that hardest fight in the game?