Although I don't know them personally, I've heard good things about Mustangs Plus, and they have done a lot of innovative marketing ideas, including the "restomod" project. I used to work for Sacramento Mustang ("Ultimate Mustang Parts" catalog & nat'l advert.) from 1985-93, when both SM and MP began expansion on a national level.
Since I'm only tossing out my opinion, I just thought that from where I see it (in the magazine), Ron's letters tend to ramble, and repeat. It's unique that an advertiser would use their ad space to editorialize. He must be spending about $12k / mo. to run in MM and M&F--each.
It's definately a scary experience to get a "C&D", or a nasty legal letter out of the blue like that. For someone who's business depends on trademarked items immediately has to get their priorities lined up. I just think (again, only my opinion) that his letters should be more clearly written to bring out his points more clearly. "IF" the legal threat is there, I think that an open letter in the Wall St. Journal from dealers, collectively, would make a more effective venue to explain their point(s). Look at how SEMA works with the public and politicians.
I don't know the current status of Ford's legal (outsourced team) wrangling with this issue, but I'm sure someone here can set us straight--if it's available for public comsumption.
Just like most folks on the sidelines, I just wish that Ford corporate would listen to the hobby a little closer. Ron makes many good points about the brand loyalty. On the other side, I honor Ford's interest and attention when they made the 2007 and 2008 GT/CS Mustangs. It all comes down to whom you talk to in the company. There are a lot of internal folks that are enthusiasts, and they drive (and respect) the excitement.
It's a shame that this is how things in life happen--but that's part of the real (business) world. Despite my (opinioned) comments, I do wish Mustangs Plus the best outcome in this matter.
Paul N.