Champ picks should not outweigh skill/mechanics

I think a majority of the community can agree that the balance (or lack of) right now is absolutely terrible. What is worse is that there are about 10-15 champs that will almost always guarantee a win regardless of how far behind you are or how bad you are. It has gotten to the point that champ select outweighs game skill and mechanics by far.

Take this example:

A person picks Vayne and is 0/8/1 at 10 minutes. The 20 minute mark hits and she just wiped your team and is still at full health. Its been 25 minutes and that 0/8/1 Vayne is now 15/8/1 destroying your nexus towers. Sound familiar?

How about that Nasus that is full build at 15 minutes and you have a 20 k/a lead? Ya he just wiped your team and pushed all the way to your nexus.

Oh you thought you were going to win that team fight? Sorry you cant even get Maokai below 90% health and he just bursted your ADC.

I could go on but you get the point. There are about 10-15 champs that are all this way.

No matter how good you play or your skill level you are usually going to lose those games.