Well, frankly, Qualifiers are supposed to work fine if you make the objects global.
But really, Qualifiers in 1 frame are extremely useful if you use a version of this frame over and over and over. Global events are tedious, but once you DO get them working, its great.
Qualifiers ( if its just for engine work, or whatnot ), And Global Events for other things. I mean, you'd only be working in some frames right?