Okay, first off, Leaver Buster annoys the pineapple out of me. Just saying. I have a pomegranatety computer and LoL is randomly glitchy for me. So, sometimes it simply won't open a match, sometimes it won't let me do silly little things like clicking, and it's just annoying.
Brings me to my second point:
The seriousness of the offense needs to be decided by how much of the game you affect.
This would help make it so that people who d/c in the middle of the game or whose game glitches out aren't punished the same as someone who leaves simply to spite their team.
A base value plus a value based on what percentage of the game you leave would be your amount. i.e., 20 base value for leaving or afking, +1 for the percentage of the game you affect, rounded up. Base value only applied once per game, not per action. Not registered in the first 5 minutes.
I'm just sick of getting b& because my computer is apparently pomegranate. Leaver Buster is a decent idea, but it's implemented poorly. Falls for the fallacy of the false positive.