The savings wouldn't be substantial, but you could save money and get all the channels you want. Dish could set up a basement rate. $30 straight up and build up from there.You do realize that if it went the way you want it to go that the channels that you only want to watch will most likely go up in cost. If some of the channels you want to keep are niche channels then they will likely go away or will be very expensive. Chances are you won't up saving as much as you think you will and you'll just pay more per channel than you are now.
What I'd like is to pay between a 120+ and 200, and get all of the channels I wanted. It would mean the excluding a number of channels, but I could prioritize as needed. The basement fee would slush money around to help pay for the channels in aggregate.