Rank Structure Idea?

So up front, we all know the rank goes by you get 100 points and you start your promos. That's the meat and potatoes to it all. However for the people that hit like 99 points just to have to go through another 20-40minute game because of that hurts. A great deal of hurt. Why not create a structure such as this. Just get to ten points? Each win gives you a point and each lost makes you lose a point. If you are on a hot streak and win three games in a row you get a bonus point for your next win. (Make it happen once per every three wins. o.o

IF you wanted to go further with the idea you could implement a bonus structure for playing a role everyone else doesn't want to play. Chance of bonus point for playing Support this game, or going jungle

Don't get me wrong I understand the LP logic, however I've won games that only gave me 9 points and some games gave me almost 20 points. Same with some games I lost. If it's just simplified as to just ten points it's just less hassle in my opinion. o.o Feed Back please.