For what it's worth, after checking on the internet, I did found a "modern" alternative to Brooks saddle. And it was in the Fizik lineup I didn't completely checked.
It is called the Fizik Kurve line, available in their 3 shapes, and is a suspended carbon saddle. So a lot like a Brooks, but with a modern "flat" or semi flat shape.
Price is completely insane, but there is a still utterly expensive but less so one in the local classifieds I will have to give a try.
I would also have to try the Antares and Antares VS as well as Aliante and Aliante VS to see if it works better for me...