[pablo_can]

if you can accept permanently closed sunroof just cover the roof with transparent film like I do. no leaks no sound no problem, it'll protect the paint also.
some versions of w245 has panoramic roof, it has been discussed here and both has the same dimensions what I remember. mb dealer could find one but I'm sure it'll cost as much as a new lamella sunroof.

 

[pablo_can]

I suggest using transparent vinly.
like the one in the link
https://www.aliexpress.com/item/32259190489.html

 

[pablo_can]

You had me confused for a bit, then I realized that the photo is not of your car, correct?

I've been thinking the same, and looking for options.

no it is not mine. I've added it to show you the panaromic roof option. my roof is covered with a transparent vinly over lamella sunroof.