Aside from the clear issues with the plaza, security is one of the main issues with the current City Hall itself. It was designed as a public space with the third floor essentially being 100% open. Go up those daunting stairs inside and there's an internal plaza (formerly) freely accessible from the stairs wrapping around from Congress St and from the plaza; both of which are now closed off. This idea that being safe means keeping someone a few feet further away is a little silly. It was sort of like City Hall was to hover above the plaza.