An addition that is more reminiscent of the straight lines of the current building might be more appropriate. While I like the attempt being made to open up the east side of the building with the glass facade, its current design is obtrusive in that it appears to have been just glued on to the building. If it were scaled down to not exceed the perimeter or outline of the current east wall, it might work. Thank you for this opportunity to provide input. Therefore, we are approaching renovation as if it were already on the Registry.
Federal regulations regarding renovation are quite clear.
Any modification to the original structure must not look like it was part of the original structure. Hence, the curved roof is clearly, as you point out, not going to be mistaken for part of the original building. Downtown workers can drop in during lunch hour or after work. Also, perhaps you won't have as many vagrants which I consider extremely dangerous for other patrons. Hopefully, the police will take a more active role in patrons' safety.