Ok, pulled out the tape measure for the trigger pull length. With the Apex polymer trigger and kit, the takeup is a shade over 0.25". Maybe 0.27"? after the takeup, another 3/32" for press-break-overtravel. Called 1/16" for the press-break and 1/32" overtravel. I don't have a spring gauge to measure the trigger pull weight.
I've been doing a lot of dry practice this weekend and I have more observations. They can be isolated the Apex parts, or the combo of M&P 2.0 and Apex. Decide that for yourself.
There are essentially two ways of manipulating the trigger and the Apex parts give you an advantage either way. My normal way of shooting is to draw and clear the holster, rotate the elbow down, gun up so the muzzle is pointing forward (close contact shooting position). Push the gun forward and the support hand comes off the chest and acquire the grip. I thumb the safety off when the gun is pointed at the target and moving forward. My finger normally goes to the trigger as I'm reaching full extension and acquiring the sights. My accustomed and normal trigger operation is to take up the slack and when I have the sight picture and sight alignment I complete the press and fire. The Apex parts help with this as well. Take up is light and smooth and then stops at the sear. You can clearly feel the stop. Press a little more (1/16") and it breaks with almost no overtravel. This is very nice.
However, inexperienced and experienced shooters sometimes "slap" the trigger, i.e. there is no initial takeup, just finger on trigger and all the way back with no two stage operation. I had to struggle to make myself do this, but I did. The result was the same, no movement of the sights when the trigger was pressed. The takeup was light and smooth enough, and the actual sear break and overtravel so short, that the transition did not affect the sight alignment. Nice.
One last thing. The Apex package comes with a replacement trigger return spring as well. It actually increases the trigger pull weight a little and I opted not to use it. But for those who choose to go the Apex route, be advised that you can modify the trigger pull for slightly lighter or slightly heavier depending on your preference.