System should ponderate LP win/lost based on personal performance.
pretty simple....just make the system take intro acount a variety of critera to acheive some kind of performance score for the match, and ajust LP win/lost accordingly.
exemple, system could take intro account:
- K+A/d
- kill /assist contribution (how many kill/assist you have comnared to the team total)
- death contribution
- damage to champion / contribution
- damage to structure / contribution
- cc landed/time
- cs
- ward placed / contribution
- damage taken /contribution
- heal /shied to allies
- etc.
IMO, to not disaventage suport player...game should give more important to assist than kill...ward placed and other important suport factor. BECAUSE YES! suport can be the most importent factor for a win and deserve to get good/bets score if they did well...but as a GOOD suport get no kill, often more death than rest of team...have to rely heavily on ward, assist, healing/shield and other factor to determine sut how well they did their job.
and once you get personal score, just make better player win more lp for a win, lose less for a lost. and worst player lose more for a lost and win less for a win.
why?
Because one of the problem in ranked matchamking IMO is the huge disperacy ot skill in the same league/division. there is some player who are in the right place. But you also get a lot of player who constantly play better than average but have a hard time claiming because sometime this is hard to jsut carry feeder EVERY game (not to mention lto of lost due to dc/leaver). just as you get poeple who are constantly under average but GET CARRIED any2way so the dotn fall like they should normally.
having such a system would encourage you climbing up faster if you play well...even if you still lose due to 0-16 adc, at least you should normally win more LP than lose if you are consistent in good score despire having a ahrd tiem breaking 50% win ratio. and vise versa for thsoe who alway feed and get carreid, they might stay close 50% win ratio but WILL fall of faster if they keep feeding.
and if you are jsut average...well...should nto change much.