I've read many threads about the "personality" of new hosts and being honest, since I rarely watch QVC (I order online and may then watch a presentation) haven't noticed this "all about me" issue.
That said, is it really all that surprising that the new hosts ARE all about "me"? That attitude is found everywhere daily in real life. It's the #1 complaint I hear from teachers, from friends who are in social work, from nursing staff and hospital employees (I spend a lot of time in hospitals). The new hosts are a reflection of what's out there in society so, no surprise.
Each person has the choice to accept it or not. Make your choice.
As for Jill leaving, I wish her well. As for the "older" hosts vs "newer" hosts, you know QVC keeps track of the numbers watching which host; show them who you prefer.