I was thinking something similar. David has a "shtick".......and up until the past year, his show was showing a lot of new stuff, and as an avid "pretend" chef, I really enjoyed watching and bought quite a bit.
I think Shawn's days are numbered. Maybe it's wishful thinking on my part, but she doesn't seem to fit anywhere and while her "shtick" seems to be that of a ditzy teenager, it's not going to sustain her or QVC in the long run. No one likes seeing a 40 year old pretend to be a tweener! To me, Shawn appears to be in limbo, in terms of what QVC wants to do with her. Her own attitude will get in the way of that - as much as I don't like seeing a 40-ish year old woman pretend to be a 20 year old, I also don't like seeing someone act bored or rude on the rare occasions I tune in.
At the end of the day, I think it's about product offering and service. And we all know that QVC's product offerings have gone downhill. Add to that their lame shipping charges and their slow shipping, and it's a recipe for tanking hard. They keep wanting us to think it's the hosts who will make me buy.....and it's just not. At least for me.