Some airport authorities (eg Narita ) request idle reverse only unless more is needed. I forget the exact wording.
This was for noise consideration of the surrounding communities near the airport.
I generally, never used anything but idle reverse unless the runway was wet or contaminated.
In the MD-88 you could cause directional control problems by selecting full reverse because it would diminish the effectiveness of the rudder.
One stormy night at LGA I used maximum reverse on a 727 which resulted in the center engine popping off a few compressor stalls. The tower controller started yelling that we were on fire because of the display.