Candace Cameron Bure? Lisa Rinna? They are both long gone.
Kim Gravel is a very popular "front" for her line. She has hinted many times that she is not a designer, but has a lot to say about the fit of a garment.
QVC has in-house groups of designers that work on many of these brands you see presented. They cater to what the Buyers want as the least risky, mass market design to sell to what they think is the typical QVC customer.
Like you said, unfortunately it's not about unique designs anymore, it's about numbers only. You have to go outside QVC to get truly unique designs.
I agree, I'm apparently not the typical QVC customer. I see so many of the same ol' same ol' designs being pushed across multi brands here. Show me a poncho type of cardigan or top, and I can mention at least five QVC brands presenting the same poncho type of thing. Been there, done that, but just modify the fabric or colors.
While I never wore Bob Mackie or George Simonton, at least they seemed to give customers something different.
What have I liked recently on QVC? Beautiful by George Zarian. But trust me, he'll probably not be here long either, unless he starts bringing 20 different versions of jeans and open knit cardigans.