I mean, if they were hell bent on adding Hattie but with no chance of him being added to the balcony, i'd have been in favor of restructuring parts of the attic to make space for him in there. Along with a new bride if lighting was a concern (but I also hate the current bride, so i'm a bit biased in favor of another attic overhaul to implement a more classic quiet and scary bride).
I do think I really would rather not have him at all than where they place him. He ruins the hallway scene IMO. Sort of reminds me of the insertion of a new Barbossa AA into DLP's POTC right in front of the old iconic skeleton shipwreck scene. As cool and high quality as these figures may be in a vacuum, it's putting things where they don't belong.