That's not dumb at all! The studio numbers have been interesting since 2002, trying to figure out each one. It was a good way to show they weren't finished with building the Studios too.
This is what we know so far:
Studio 1 - Disney Studio 1
Studio 2 - CinéMagique
Studio 3 - Animagique
Studio 4 - Unknown
Studio 5 - Crush's Coaster
Studio 6 - Unknown
Studio 7 - Armageddon: Special Effects
Studio 8 - Rock 'n' Roller Coaster
Studio 9 - Rock 'n' Roller Coaster
Studio 4 must either be Walt Disney Television Studios (though this has never been confirmed), or the cancelled sound effects show between TV Studios and CinéMagique, or... something else. It'd make sense for it to be something in Production Courtyard though, then for Studio 6 to be around the ToT/STT area.
Crush was originally going to be number 4 but it changed... I remember raptor once guessed it was just because a 5 looks better in Disney font. :lol: