Allow Power Whip
Allow ThunderPunch
Allow Ice Punch
Power Whip doesn't kill anything significant that Leaf Blade doesn't, while opening up usability for a Coil set.
While Ice Punch can handle Hydregion, it should be noted that Hydregion can be handled without Ice Punch (Hidden Power Ice/Bug/Fighting, X-Scissor, Bug Buzz). In my mind, giving the physical sets a method of dealing with Hydregion is a balancing act between the two sides of the spectrum.