I think the Masters does a wonderful job, all the way around. I can understand why you (and me) might want more tv coverage beyond four hours, but then again - holding down the interest level of the viewers for more than a few hours, regardless of whatever sport it is, isn't that easy. Not to mention that in doing so, suddenly you have to include advertisements and commercials having to fill the telecast. So it's not like we'd be getting that much more actual golf coverage with two additional hours, once you include the televised commercial ads.
I think they've got it pegged to a science. Want more - go to the website and watch the streaming coverage until the network picks it up live on cable. No commercial ads there either. 😉
I do it all the time, have done it for years. And quite frankly - the commentating on the streaming website is better than what we see on the live CBS telecast.
Check it out, you might be impressed. I know I was. It's actually a great feature they've added over the years.