I feel as though a mode key would make the 'Shatterer even more handy - the ability to switch between active abilities. (Shift+Mouswheel?)
For example, an 'A' rank pick could toggle between the the 'C', 'B', and 'A' rank sizes.
I found that the 3x3 area was more handy than the A rank's 5x5, being able to switch would be terrific.

Also, the ability to rebind the Shatterer's active ability key would be simply fantastic.

What do you think?