Philip:
I never say never.
I've often looked to others' work as inspiration for a current project, or just to get out of a rut ... as I mentioned in a recent thread about Tumble Creek, for example, our inspiration there was that there weren't many classic parkland courses in Washington state, so we thought a course in the style of Tillinghast or Ross would be something different and successful. But, that was entirely an internal decision. It's different when you are going to market the course around that sort of connection. It ties your hands a bit, if you are trying to stick with the program.
So, I decided not to pursue the MacKenzie / El Boqueron project, and I probably won't be looking for a Ross or Tillinghast tribute course anytime soon. (I get plenty of that from consulting on their courses, anyway.) I felt differently about Macdonald because I was so familiar with the classic templates and I felt like we could actually pull off something authentic to his style, whereas with other designers I think you would really just be stealing their names for marketing purposes, and doing what you wanted. [Does anybody remember when Jack Nicklaus did a MacKenzie style course 10-12 years ago? They gave it a lot of publicity at the time, but I'm sure few remember it now. I remember it, just for the immortal quote from Jack that he "didn't know if they should call it a 'MacNicklaus' or a 'Nickenzie'."]
On the other hand, I have discussed with someone in Asia the possibility of doing a multi-course project and trying to do different architects' styles ... and in China I think that would be okay, since they don't have any of the original versions to enjoy or to learn from. But I would only do it if they let me build a "Doak" course first. There are only 29 of those [even if you include Old Macdonald and Sebonack], and I would like a few more chances to show what I can do with a free hand.