All I need to know is that by avaiable historical documentation on the original intent of the Commerce CLause what we've got now is dead-nuts wrong.
Your explanations, excuses, and desire to have a commerce clause that's just elastic enough to get you what you want without having to do a lot of work for it aren't doing a damn thing to fix it, so I'm not particularly interested in them.
Excuse me if that sounds harsh, but the current situation in Washington has proven that there cannot be any mushy middle ground. If you give them any leeway at all they will take everything.
As far as I'm concerned, if you want the federal government to have the authority to prohibit personal growing and posession of marijuana, then you need to get yourself an amendment. You can get in line behind the people that want the federal government control health care.