I disagree with the casting traps/cross/melody at the target this would take away all the differences of each class.
Warlocks should lean more in to waves, Pyro mass AOE and shaman the hybrid of wave/cast at target.

I do agree with making it so you can click the hotkey and it will automatically shoot at your mouse location without the need to click.

I also agree that other classes needs buffing for example.
Advanced and sweeping should scale properly.

Barb:
Rage of Fury should be 100% on all SQM.
Shockwave should hit 5 SQM around them (3 infront and 1 at each side)

Warlock:
Raise their second hit on Cross back to where it was.