This suggestion is related to the issue reported in #36654.
I'm looking for a way to have ToMinimalDisplayString exhibit the global:: qualification (which, BTW, I think should be automatically included when required for the scope in question). However, I wouldn't like to create a full SymbolDisplayFormat object on my own, because I'd miss the defaults.
Could you please somehow expose this default? Then, I'd use reuse it and just tweak the SymbolDisplayGlobalNamespaceStyle option.