I'm curious why this is so fragmented by object type - if I'm following a tag, why would I limit myself to Questions or Blogs?
Using your SAP Mentors Archives example, in order to navigate to see all object types for a desired tag it requires me to jump to another page, and then I can filter by type.
I would expect type filtering to be a secondary need for a user to refine results, not start with Answers, then jump to tag filtered Answers, then move to all Tags, to then select only Blogs...
Am I missing something here - I thought tags were intended to glue associated content together around a theme, or for the primary base tags to be the replacement for Spaces?