AFK in ranked(ye riot too lazy to think of a solution, so here is one)

Good day fellow LoL players, and lazy Rioteers

As you can all guess, it has been a though day in ranked... Started the morning of with a good win, and then, i got screwed (thanks RIot). I went into my 2nd game of the day, boom 2 afks since level 1, they never came back... Lost one of my promos, its ok will win next one. Next game, flamer cause jung wont gank bot, feeds then goes afk... lost promo series. 3rd game, went well for once actually... was on way winning.. then premade bot dc'd and never came back... lost 18 LP even though I did almost my personal best on my champ, cool... 4th game... we got 7 kills in 6mins, all going great... ezreal dies, o wait he dc'd or afk or whatever... entire game we were ahead and almost won so many times 4v5... but eventually they caught up and we lost at 56mins... lost 17 LP... So damn unfair

I know its just silver and blabla, but my point stands that it is super unfair.

My solution : SIMPLE AND EASY, dont let the team with the afk lose LP or lose their promos... Only let the afker lose his LP, simple as that