I like POTG but I also kind of want the option to skip straight to the score screen sometimes, especially if I just want to get out of the round quickly without worrying about quitters penalty or whatever (how does that even work exactly? when are you okay to leave the game?). I definitely don't mind how random it is and wonder if it's actually an intentional quirk.
Blizzard confirmed that when the game is over, you can quit without a penalty or losing XP.