Smells like the death of newspapers more than more basketball talk. Grange has not been solely a voice of basketball at all. He'll likely be talking hockey as much as anyone else.
TSN talks basketball in the afternoon, because it is a feed from ESPN radio for most of it. It's good, but it's not comparable to the FAN in that respect - in that they are not making a conscious choice of programming specifically around basketball talk, but rather allowing the programmers at ESPN to do so while paying for their feed.