I'm curious as well. I expect the M100s will be far more dynamic and will throw a wider soundstage particularly if you can place them 9 or more feet apart.

I would expect you've bottomed out the Hawks? I have a pair of Dreamcatchers in a secondary 2.1 only room and they bottom out even though I have them crossed over at 80Hz. The room is 10x10x8 so it doesn't take much to bottom them.

If you do hear the M100s or LFRs, I'd be curious to know if you hear depth as well as width and height.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated