Formal taxonomies are generally better fits for well-entrenched fields of knowledge where a shared vocabulary denotes a set of precise, static meanings...Some of this term set cocktail is a homebrew
The scoop behind Enterprise Content Types is that you can define one common set of content types (the hub) in a Site Collection
The question is to decide, among heritage value, legal value and business value, which is the most appropriate to set the information assets of an organization?