It's all about giving consumer a choice, but sometimes too many choices can be confusing and not every option is equally ideal.
I think it has a role in a 2CH set-up with player decoding to analogue to an integrated amp, because digital output isn't possible in that scenario and DSD-PCM-analogue confers no advantage over DSD-analogue if no digital processing is going to happen down the line. In that situation I'd choose DSD-analogue (and I do although I have different SACD players from Oppo for 2CH).
For a MCH set-up the case for sending DSD is less convincing. If you're not going to do bass management or any digital processing down the line, you likely not have any sub signal because a lot of SACDs are 5.0, not 5.1. And I'm not sure how many SSP/AVRs, even those with a 'DSD' setting (which only means it is receiving DSD) can decode DSD directly to analogue.
Since you have the Marantz, you probably have followed a similar discussion over there:
One thing I should point out is, usually we just don't know how SSP/receivers convert DSD to PCM, at what sample rate so if you're going to use digital processing you might just as well let player do the conversion, at least you know what the player is doing (usually SSP/AVRs tell you).