Okay, rising to the challenge of @Sparkletastic description of her ideal new black bag...
I have 3 more suggestions. I don't have these bags in black with SHW, but I see these as really versatile bags with ladylike and feminine silhouettes, which seems to be what you are describing.
They probably will be available in black / SHW combinations if not now, then in preloved market.
1. LV Alma. I have this in Rose Ballerine.
2. Mulberry Lily. I have this in Glossy Black (and I think @ksuromax has a lovely Oxblood NVT!)
3. Anything from Ferragamo. Such streamlined feminine silhouettes. I have the Fiamma in cornflower blue.
Probably the Lily is the closest to your description. And as you love your jumbo single flaps, this would be really similar.
What do you think? Am I rising to the challenge?
ETA: these all do meet your requirement of shoulder carry as well. The Fiamma has a detachable shoulder strap, and so does the Alma!
3 more ultra-stunning bags. One day I want a SF, they are impeccable.