I don't think so. It is not so simple.
I i'm pretty sure you never played World of Warcraft. Every time people get some numbers to measure between them they begin to fight for numbers. Exceptions exist, but become more rare every day until there only lone freaks (like me) left. This effect stops me from extending subscription. Many of them play to pwn n00bs, but contingent here is friendly. Don't flatter yourselves, it's not because you are better people.
As to experiments, before new deck proves it's effectiveness, you lose a number of combats. When it does, it stops being experimental - because experiment ended positively. Thus, experimental decks always mean worse win/loss ratio.
And 2 merchito - it did not mean i disapprove you. I found this thread interesting, thanks. I just wanted to prevent development of ratio system before it becomes an eyesore and spoils gameplay.