60 Crewchief here, I've worked on Mikes specifically for the past 6 and a half years. I have a couple critiques that should improve the "authenticity", as Jay Crowe would say. I'm not going to start counting rivets or going into nity-gritty details, but here are some changes that I think could be made to make it a true Mike model, I'll start nose to tail then go up to the main rotor pylon.
The edges of the windshields should be sharp 90 degree corners, instead of beveled.
The aircraft shouldn't have those homing antennas that are just behind the pilot doors. That's an Alpha/Lima model thing.
The main landing-gear drag beam fairing (also what the pilot's step is connected to) is the Alpha model profile. The Mike has it stick out to the outside edge of the tire and squared off on the end to make room for the LWR. Its also set up for the refuel probe on the right side, normal active army doesn't use this.
The two blade antennas on the belly shouldn't exist. They were only on dedicated rescue helicopters (IE the HH60G and HH60M), and are now obsolete, so they were removed.
The cabin door should be either all the way open or all the way closed, there is no locking mechanism to hold it anywhere else.
The main landing gear wheel doesn't have that huge cylinder protruding out from it on the inboard side. The axle is just smaller than the nut holding the wheel on the outboard side.
I'm sure you're going to upgrade the seats, but its worth noting. Currently you have Alpha/Lima seats installed. Mike seats are much different.
I saw the rappel rings, those are pretty much only used during Air-Assault School. Also the FRIES bar in the fast roping pictures looks like its too far forward, but it may be the angle.
The aft Laser Warning Receiver is installed on these blocks. Also the vent below this one is only on the left side.
Active duty UH-60Ms typically don't have hoists installed, but National Guard and Reserve units may have them installed.
There should not be a long high frequency antenna going down the side of the tail boom. That's an Alpha/Lima feature, and should only be on the left side.
I'm not sure what that random blade antenna is in the middle of the tail boom is, but it doesn't exist on Mikes.
There should be 3 countermeasure "buckets" two flare launchers on either side angled outward and one chaff launcher on the left side angled up and back. Each holding 30 shots.
There's a loop antenna just above where the tail landing gear attaches.
The outboard panels of the folding stabilator wing are composite and don't have the strengthening bumps that the old aluminum ones have. (See chaff/flare pic)
Main Rotor Pylon:
The main rotor blade tips are the old Alpha/Lima style (the upward angle is incorrect, though). The blade tips should be angled down and back.
The blades should have two small trim tabs (thin bits hanging off the trailing edge of the blade seen above)
The IHIRSS (Improved Hover Infra-Red Suppression System) exhaust, while not on Mike models anymore, should be tucked in a little more. (Rotated down, to be more in line with the top edge of the airframe looking from the side, and rotated down when looking from the front.) Note, most of these pictures are from other variants of the H-60, the HIRSS on everything else and the IHIRSS on the Mike are externally identical: Pic 1, Pic 2, Pic3, Pic 4, Pic 5, Pic 6, Pic 7, Pic 8, Pic 9, Pic 10, Pic 11, Pic 12, Pic 13, Pic 14, Pic 15, Pic 16, Pic 17, Pic 18, Pic 19, Pic 20, Pic 21, Pic 22, Pic 23, Pic 24, Pic 25
On the HIRSS, the engine's IPS (Inlet Particle Separator) blower duct is only visible on the left side.
With all of those critiques aside, I'm liking what I'm seeing so far, especially the cockpit, keep up the good work.
Also, all but the #3 MFD (Second from the right) are powered by the generators. When you turn the battery on, only the #3 MFD should come on.