Re: treble w/ Midnight (especially Plus version)Classic yes, Plus not so much as their are odd reverb issues with some albums, especially 70's rock where the intimacy of the vocals gets smeared. Midnight the treble is dialled back too much. Never tiring, yet fails to fully engage, switching to region E helps a lot, region J never offends yet becomes dull as the treble is rolled off and the dynamics reduced.
FEv2 does not have any such downsides as far as I'm aware and switching the WM1A from J to E becomes electrifying as the dynamics really open up across the entire spectrum.
Q-6
My view as part of the relatively inexperienced unwashed masses agrees with this opinion. I tried Midnight (Plus) on J region the other night, and one album I am intimately familiar with, In Absentia by Porcupine Tree sounded veiled to me. I totally understand why treble sensitive users would favor this, but that most definitely is not me. I really preferred Midnight (Classic) over the Plus version; I'm rolling with Dawn (Plus) again and love it on J region.
I do have some of the older firmwares, and pretty sure FEv2 is among them. if so, I'll give that a shot tonight as I am intrigued by the praise it gets.