While i agree that there is a severe distinction between 3 minutes of game time and an entire full LP game, currently league has an obnoxious system that allows any user which disconnects a chance to return... This does in fact stop /remake from working at times. Additionally there is a difference between never loading in and never being able to connect. Giving users the ability to just turn off their modem(or any other force disconnect method) to force a crash to prevent LP loss and Leaverbuster penalties, even just to mitigate them is a problem.
Should /remake games have less of a penalty, in the case of never getting into the game I believe so, but finding out your adc is garbage so you disconnect to force a remake means you should suffer full LP penalty and depending on /remake succeeding determine the Leaverbuster penalty.
Additionally your title is lacking so expect this discussion to be thumbs downed into non-existence as the people, such as myself, whom want this discussed are likely to be the minority.