[bpape]

I'd agree that you need to get some control up higher in the room. Maybe something like a 4'x4' diamond shape between each window? That might pass the ladies' test?

Also, you should likely consider something large on the flat wall above the kitchen area. Maybe something made to match the general shape of the vault. That long dimension is causing a lot of issues as those are the longest echos from a time perspective.

Ceiling might help some but realistically, hanging baffles (probably poor acceptance factor) work very well in areas like that - but not exclusively - you still need the on the wall solution(s).

Bryan