It’s been 18 months since Disney’s $71.3 billion acquisition of 20th Century Fox and half-a-year since they dropped “Fox” from 20th Century Fox and Fox Searchlight brands (leading to labels 20th Century and Searchlight), so it’s not a huge surprise that Disney would also want to rebrand and streamline the business units under its Disney Television Studios umbrella, including the unexpected reappearance of a Disney legacy brand. The meat-and-potatoes of it is that ABC Studios and its subsidiary ABC Signature (which provides programs for cable and streaming) will combine to form ABC …