The revolving commentary really makes the show. Having players with varying levels of insight and experience makes for a good mix of technical and anecdotal fun. It gives you a sense that Timmy and Johnny are alive and well in Vintage even alongside fear, surprise and ruthless efficiency. I've definitely watched matchups that I wouldn't normally care much about because of the lively chat, or in some cases the deadpan analytical "this line not that line" banter.
The great commentary is what makes the VSL so cool to watch!