Looking forward to that Maserati link, olpal.
I'd long thought of multibands as remedial devices, something you use to mitigate mistakes.
I've since broadened my view and now also see them as creative tools and mixing aids. I started down that path with Meldaproduction's MDynamicEQ, when I discovered that it could be sidechained. That led to subtle ducking effects that work wonders for bringing an element out in a busy mix without actually turning it up, and it's become a favorite technique. (Pro-MB, despite its name, is, in its default mode, actually a dynamic equalizer very much like MDynamicEQ.)
A multiband can serve more than one function, even at the same time. On the vocal bus I mentioned earlier, Pro-MB replaced two compressors (one for de-essing, the other for leveling)
and an equalizer
and tamed an annoying but intermittent 1KHz resonance. Four birds with one plugin. As a bonus, it also reduced overall CPU usage, which my aged computer thanked me for.
I haven't even gotten around to creative effects yet. Even though stuttering gates and pumping bass are not my style, I've been thinking that Pro-MB should be able to do that stuff easily. And that maybe, just maybe, they could have some uses even in my conservative genres.