LP Gain and Loss.

I've recently got back into playing ranked and of course the struggle is going to happen, and it's annoying to lose so many points because you had that person that doesnt want to cooperate or the person that person that wards the enemy jungle at 50 minutes and gets caught out and throws. Now, i'm not saying i deserve this or that but i was wondering how it would be to gain LP based on your personal preformance, such as farm,kills, assists and objective taking. Now, it seems a little absurd but im not asking for a huge gain in lp maybe like +4 or 5 points depending on how well you do. Also, i think that if you have a person not connect or D/C before 3 minutes or 2 i think your LP should be reduced like instead of losing 17 or 20 or whatever i think you should lose like 9 or 10 or something small because its not our fault that he or she DC/ed or that he or she couldnt connect and i dont think we should be penalized for someone that couldnt play properly or even play at all.