Silly turntable question

But Elizabeth, isn't this part of what we do as hobbyists- consider changes and enjoy the process, from conception to implementation? I didn't read the OP as someone who deserved thrashing for failure to implement after years of kicking around the idea....

You might ask Albert Porter here for some thoughts, he has marketed a custom plinth for the SP-10 (I'm not shilling for him, just making it clear that he does business in this space) and has fooled around with a number of different arms, including the longer SME.
I have an old SP-10 that is sitting idle, bought it new back in 1974. Unfortunately, it is a mk i, not the better mk ii or iii, so I'm not inclined to sink alot of money into it right now. At some point I may bring it back into play for a vintage system. I will tell you, based on my experience with the older plinths for the SP-10 that the concepts of isolation were not as well advanced or executed as they are today. Mine, which was mounted in a gorgeous Music & Sound wooden plinth, was microphonic as hell. There's also been a fair amount of discussion here about running these naked, with a free standing arm pod, but I gather that's fairly controversial insofar as the SP-10 is concerned- not sure why it wouldn't work if the turntable mounted to something that did a good job on isolation. My current table (a Kuzma) works that way- the arm stands 'free' of the table on its own pod and gives you the flexibility to add several arms. However, that table depends on mass. And it is a motha to isolate properly and get level.
Good luck.

My apologies to Elizabeth. My reading skills are obviously going south.
Mea culpa.(Although I admit to having projects, like getting my old Quads
restored, that have just languished). And Doug, thank you for the kind
correction.