I didn't mean to imply that natural modes were (ex) but that (ex) modifiers to natural movement modes are affected by movement bonuses. The first +20 increase of monk speed is (ex) as is barbarians base speed increase. Those Ex modifiers are not named movement bonuses because named movement bonuses are Sp and Su. I'm sure in final release the language will be cleared up some but the end results will be unchanged. The point of 3.5 is to fully standardize all the game mechanics and fix unanticipated confusions in various wordings.