Not really really a suggestion, just more of an "atta boy". Nice job separating the III and IV era games into their own sections, this should make things easier find between games.
About the only thing I COULD suggest is that in the mission section of IV, somehow referencing that the III and IV eras of mission coding styles are largely the same, more as an FYI for new users getting their feet wet with mission scripting.
Anyhow, nice job guys; the effort is much appreciated.