Kim Hughes we fired and replaced by George Stroumbolopolous several years back.
I remember an article in The Star at the time. The format of Live in Toronto was changed, and the first hour became primarily music because it was still a "drive time" show, and that's what listeners want to here.
The Edge was also looking for a "younger" and different sound. George definitely brought that but, I agree that Kim was great. She wrote for NOW magazine for many years after, but I think she's gone from there now.
In answer to your other question, the station does record all their in-house musical performances. I remember Alan Cross answering that question on-air once. But they don't put them together on a CD because of copyright and recording fees issues which, I imagine, are quite complicated. They have had some great live acts in there over the years though.