Being a "MARXist" myself , I would say that Bruce's wonderful Marx Bros-tribute "Brand New Old Friends" could easily be re-texted as a Wilson Bros-ditto(?) and should be re-recorded as such by the surviving Beach Boys altogether as one final project(?)
Haha! I also note a Brian Wilson 1974 interview on an Australian radio interview. There is a moment that Brian was staring at a photo, and the host told him that it was Groucho. Brian said, 'hi Groucho!'. This always makes me smile.