Most people high pass their Maggies at 80hz to relieve them of low bass, save amplifier power, and clean up the mids. Have you tried that? I'm just curious as very few people seem to run them full range when using subs.
Odd that you say that as I've seen just the opposite. Most people that are serious about their systems seem to run their Maggies fullrange with subs crossed very low, somewhere from 40 Hz on down. Why cross Maggies over that high and completely miss out on one of their best attributes, or have subs blasting up that high, totally masking the Maggie magic in that frequency range? Makes zero sense.
If you're worried about "saving" amplifier power, then you shouldn't have purchased Maggies to begin with or purchase larger, better amps.
I have played my 1.7i's at 100+ dB on several occasion, and not once has the midrange sound stressed or ragged. When you have solid, clean, strong power, you don't have to worry about any of that.
And to answer your question, yes, I did try crossing my first pair of Maggies over at 60 Hz to 80 Hz, a pair of MGLR-1's, well over 20+ years ago. Even back then, I quickly realized that they only sounded best playing fullrange and having the subs come in where the MGLR-1's fell off. Powered by an Aragon 4004 MkII, so plenty of power and current (200w @ 8 ohms, 400w @ 4 ohms).