I agree that skill bloat is one of the less-discussed drivers of character cost. Many skills have been split into multiple separate skills, and the list of Knowledge Skills keeps getting longer. However, one thing that GMs (and writers) need to keep in mind is that different genres need different levels of detail. Reed Richards and Hans Zarkov both have extensive knowledge of many scientific disciplines, but they aren't used much past, "analyze weird phenomenon of the week." The M:I team members are fluent in multiple languages, but lack of fluency never comes up (and everything is portrayed in English). On the other hand, in a police procedural, everyone will know the basics of Criminology or Forensic Medicine, but they will have different areas of expertise.