Slayer tasks change.

[The Vanguard]

Right, I have been clicking on Vannacka for about 10 minutes now, attempting to get a green dragon slayer task. This is just annoying, and whenever you do get a green dragon task, its always in a very small number, usually around the 35 amount, while others go over 100.

Can you change it so different slayer tasks pop up more often, and in greater numbers?