Re: Keith Richards. I really like Keith Richards and the fact that he’s still alive to perform. One thing I’ve never tried is his extensive use of alternate tunings and Capo usage. They don’t sound right to my musician’s ear. And, I have never considered it lame to mention his incredible and iconic career.
Keith is actually pretty sharp in spite of all the drugs. His autobiography “Life”, is a great read.
That G tuning is pretty dang fun, though I use all six strings; but I see why he only uses 5, that 6th just bottoms out and can get in the way.
I like to mix things up with open tunings. Duane Allman did most of his playing in open E. Little Martha and Sweet Melissa are easy to play in open E.
IMOH, the king of alternative tunings is Billy Gibbons. Some of his stuff is just made up.