NO experience with microwave drawers, but if they are anything like dishwasher drawers Id stay away from them! (biggerpockets.com)
I have put microwave drawer units in 2 homes thus far, never had a complaint and they save space and make it easy for the shorter people to access. (biggerpockets.com)
As for microwaves, we are doing one of three things: including microwave drawers, leaving space in the pantry for an off the shelf microwave, or include a wall oven with built in microwave above or below. (biggerpockets.com)