As I understand it, KH was designed so that 'type II' government was basically just as useful as 'type I'. To answer your question, no, I don't think there are any factional units that require the final MIC upgrade other than the Spartiatai and those really big siege guns (which are so expensive, I never even bother with them). I think they did it that way so that players would not be forced to construct Spartan-style governments in places where it made no sense. On the other hand, you can probably interpret the Agoge style government to mean a generic, military oligarchy. In this case, it would make sense to construct it in places with strong martial traditions, and weak histories of democratic rule (like Makedon, or Krete).
Bookmarks