It is a smart move from a practicality standpoint. Litigation is very expensive, even if you win the suit. It is much cheaper to make one of your own design. You don’t need to change much. The only people who really win are the lawyers when it comes to litigation, unless there is something really valuable at stake.
However, it really sucks because Sheldon did such a fabulous job on that model.
The fact is, Gibson will lose if there is a brave soul who wants to spend the money to beat them. The protection for features of utilitarian devices is extremely thin. Any functional aspects of a utilitarian device are going to be almost assuredly functional as well, and that’s true if even if there are other ways to them. Only the purely aesthetic can be protected using trademark/trade dress law.
Gibson sued PRS over their single cut that looked just like a LesPaul. The district judge ruled in favor of Gibson, and was duly reversed by the Appeals Court as well as the Supreme Court. He got the law totally wrong. BUT, that was a long and very expensive road for PRS and I’m sure no one wants to to do that.
Gibson must have a nice war chest and figured they can chase out other luthiers who have no desire to litigate like PRS did. The transaction costs are just not worth it. Especially for a foreign country, who might be sued at the FTC because they are being imported. Ugh.
Anyway, so I don’t blame Sheldon one bit for just altering his design. He’s an amazing luthier/manufacturer and he doesn’t need that headache.