If I could make the suggestion that the people who are the victims of a 4v5 lose SUBSTANTIALLY less LP than normal? I just played a 3v5 game and lost 21 LP, so that's sort of annoying. Just have the leavers lose the normal amount of LP. Think about it: why should I receive the same exact penalty as someone who decided to just give up, while I'm still trying my best to win a 3v5? It can't be that hard to implement a 4v5 mercy system.
Difficult? Probably not.
However, Riot isn't going to do this because of the obvious and inevitable abuse such a system would create.
The main point against this would be that even a MINOR amount of lp loss reduction is still abusable to some degree, not to mention the many possible situations that a "SUBSTANTIAL" lp loss reduction would cause abuse in.
Obviously riot can do this they just don't want to. They could also make it to where you cant abuse it but guess what it takes time and money. Who has any of that? pffft no one.
