X2 Exp for Certain Skills to Benefit Eco

Why not Tree?
To be honest, i think it will benefit the server.
More people will start doing rc and more runes will go into the eco.
For slayer it's a good idea, it's very slow like it should be but this way there will never be rune boots, granite mauls and abyssal whips in game which are the items people want alot.
I honestly think this would be a good idea, especially for slayer.