OP, I agree with you 100% that using an internal phono stage to do a A to D conversion is not ideal. Much better to have a stand alone phono stage that is all analog. ( which is why i use a CAT all tube phono stage).
The new Bedrok plinth is being discussed on the Linn based forums. It is the shape of the current plinth, without the radius corners of the 50th Anniversary model.
The asking price makes me question who would swing for it? There are options in tables that would be more adaptable to far superior arms ( this is the main area that i think Linn has been left behind with...their Ekos-SE is an old war horse that is well past its sell by date) that are now in reach price wise.
Presumably, ’if’ and when Linn does get around to replacing the Ekos-SE with a more competitive arm, the price will be jaw dropping! Certainly going by what they hope to get for the new Bedrok plinth. IMO, someone in their marketing department might must know something about their customer base, that the rest of us do not.