GitHub saved responses are so good for saving me exerting a bunch of emotional energy trying to be polite over and over
"While it's clear you feel strongly about this, we cannot prioritize implementation of this feature at the time. If you provide a patch, we would be happy to evaluate it and possibly integrate it."
something something something
more diplomatic, but I'm told I can come across as brusque, so you probably went in the right direction
now I can just find a polite way to write "stop bitching about your pet feature not being implemented yet and send a damn patch" once and re-use it every time that situation comes up