Allow Power Whip
Allow ThunderPunch
Allow Ice Punch
The concept, as I understand it, is to give Sketch to a Pokemon that's already competently built without it. Most competently built Pokemon do have moves on their list to help them deal with their counters. Heck, Marowak has Thunderpunch and Fire Punch. Don't get me wrong, I would be perfectly in support of a good move list that doesn't include the punches, but after reading the discussion about them, I'm just not convinced that they're too dangerous to allow.