Leaderbord for War Clans with prizes for the best ones

I think would be a great thing for the game if we had leaderboard for war clans, just as it is for trophies.
The only post I found similar to this was this one: http://forum.supercell.net/showthrea...lan%27s+league
How would it work: (just example)
Season with 2 or 3 months long.
All clans participate.
About points: Victory in war=3 points; even=1 point; loose=0 point (obviously)
The 3 clans with more points at the end of a season wins an amount of gems, shared between the clan (i'm not sure about the rules in this part, how would it be...)

Why would it be great?
Because all clan would have a chance to win, not just the top ones, with maxed bases, and it's different from clan xp perks also, because it doesn't matter how many players the clan have, but how good the members and the clan strategy is to win...
In this case, clans from the Mega family, for example, would compete with clan with TH 6, 7, 8, etc, but not directly, only in the amount of points, and that would be a great thing!

Of course there is a lot to think on this, please, if you like the idea give some suggestions!