Get more or less LP depending on score?

Ok just getting this out there... I have no clue how the league point system works... but I still wanna make this So I have been playing ranked lately (currently b4 rip ) and I have noticed that I don't get very many league points if I do godly so as to say 15.0 KDA Ratio as a support, which, according to LOLSUMO, is challenger tier. (Not saying I should be challenger, i feel like i should be sil 3 or somethin) but in games like that I only received about 22, 23 Lp for that, which is the average. You should be able to get about 30, because the score was really, really good! I feel as though you should get about 25, 30 lp.. Yes, thats a HUGE step, I mean it only takes 5 games to get into promos, but with a score like the 15.0 KDA Ratio it should be like that. You're rewarding good players with good rewards

On games that you do good in and carry but there is just this one player who doesn't do something correctly and it throws the whole game and you went like 22/5/10 or something like that and you lose like 20 Lp (cant remember the numbers for when you lose ) i feel like you should lose like 15 Lp or something, not a big change, just about 5 Lp less or something.

A change like this could make smurf accounts less seen in lowest of ranks (mainly b5). Yes, they'll still be there, just not as long!

Rip pink wards Also i have no clue which board this should go in