That is a good question!!!
It might be. We stayed in the BCV in October and had the Dining Plan. It worked for us.
I would suggest you do a little more research in regards where you would want to eat your TS meals. The primary value of the plan is in the TS credits.
I researched the menus on allearsnet.com and printed menus out. We (3 Adults) decided which restaurants we wanted to eat at (TS) and I looked at the cost of what we would most likely order (not necessarlily the most expensive but what we would like). I decided that we would "cover the cost of the plan just in the TS meals. I believe that we used the full value of the Dining Plan in our TS meals alone. It seemed to us that the CS and snacks were basically "free".
I saved our receipts and we saved $450 over the cost of the Dining Plan.
We did eat CS in the parks most days, and we were able to use the snack credits at the Food and Wine Festival - an unexpected treat.
Basically we ate breakfast in the room, CS where ever we happened to be when we were hungry and a nice TS meal for dinner.
We ate TS at: Rose & Crown, Le Cellier, Teppanyaki, Morocco, 'OHana and the Yachtsman Steakhouse.
The Dining Plan is not for everyone, so I suggest you do a little research to see if it will work for you.
Good Luck