I don't have a Millie, but almost replaced my machine (a different brand) a couple of years ago.
I totally agree with you about the fully adjustable front handles. The handles going horizontally across the front of the machine block the view of the quilt when quilting from front to back. It's the same with the light bar on the machine I own now. I can adjust the height of the table as much as I want; it's still in the way. The handles on the Bernina Q24, A-1 or the Innova are perfect examples of getting the handles out of the way.
If the machine still beeps in regulated mode, there should be a way to turn it off for those who don't like the beeping.
Other than that, I was totally impressed with the Millie - just couldn't justify buying a new machine when mine works fine. With the new changes, such as moving the dead bar back on the frame, the new lighting, and the changes to the channel locks, I think it's an awesome machine. I love that there isn't a separate tablet. And of course, that it's made in the US and has a lifetime warranty.
Oh, and have your machines at more shows! I’m going to Quilt Odyssey in Hershey at the end of the month and the Pennsylvania National Quilt Extravaganza in September and wish you were represented there!
Just a few suggestions from an *almost* Millie owner!