I quite enjoyed the zone. I was afraid that in "bringing back" certain characters, they would end up devaluing the decisions made in ShB but the way they did it really just gave even more life to them. If they had done Elpis any different I don't think the impact would have been the same. The characters would not have felt as fleshed out and the villain(s) that came to the fore would have felt like a complete butt pull.
Now, will I go back there all the time? Probably not outside of the usual reasons I go back to any old zones.. but that's hardly unusual. I do worry that it will be hard them to actual constructively use Elpis in the future for future content given that it's literally locked in time but beyond that I don't have any issues.
I do feel that a lot of the pacing issues that people are describing are likely the result of A.) the story in general feeling propulsive while the content isn't always a match and B.) people just feeling they need to rush through everything to get to the end as fast as possible.