Why are people suggesting guys like Randy, Bas etc to replace Goldberg who is the host commentator? You think any of these guys can do that job?
They can't simply replace Goldberg, it would need to be a host voice who does all the scripted stuff and everything Goldy does. Considering how hard that job actually would be and how seamless Goldy is aside from his lack of knowledge, he's going to be difficult to replace.
That said, I've been saying for ages how the UFC needs a refresh. The production, the commentating, the music, the format... everything. It's the same thing constantly with very little variation at all. Everything needs to evolve and change, UFC just do the same thing with bigger events and in different places. They obviously don't want to change the show.