The DxDDP, even for next year when the price goes up, is priced in a way that allows more flexibility with "value" than the basic plan.
What you're saying is absolutely true of the basic plan. With the removal of the appetizer there's no way to make signature dining make sense on the plan. California Grill with an average entree-dessert-drink cost around $26 per credit is as just not as good a use of TS credits as Kona, with an average entree-dessert-drink cost of $31 or Chef Mickey's at $32.
On the basic plan, the per credit breakdown I work from looks something like this (2011 non-peak pricing): 45.99 - 1 snack at 2.50 = 43.49 - 1 counter service at 13.00 (average) = 30.49 per table service credit. Both 1 credit uses are just barely a "good value" on the plan, but the signature dinner doesn't even reach the break-even point. You really can't mess around with lower value restaurants, whether signatures or inexpensive venues like The Plaza or non-character breakfasts, and still get your money's worth from the plan.
But look at those same numbers for the deluxe plan, and you get a different picture. Adding the appetizer back in brings the value at California Grill to $35 (again, per credit - $70 average 3 course meal cost), Kona to $39, and leaves Chef Mickey unchanged at $32.
Without accounting for the mugs, the per-credit breakdown of the deluxe plan ends up looking something like this (2011 pricing): 78.99 - 2 snacks @ 2.50 (average) = 73.99 divided by 3 meals = $24.66 per meal credit. All three of the above are a "good value" on the plan. There is a lot more flexibility to choose less expensive restaurants and still get your money's worth out of the deluxe plan, because of that difference in per-credit value.
And now that I have once again exposed my borderline-obsessive Disney dining dorkiness to the world, I'll share the numbers from my spreadsheet for our May trip. I'm still working on the exact plan because my ADR date is this coming Saturday but with my "must dos" - which use 8 of 12 credits per person and include 2 signature dinners on a 4 night trip - we're right at the breakeven point for the plan. Whatever we do with the rest of those credits - most likely another TS lunch, maybe a character breakfast, and some counter service to fill in the gaps - is all savings.
Join the dork club.
I have my ADRs and have a spreadsheet with the cost of what I'd like to order at each meal. I choose what I'd actually like, not what would maximize the plan (some meals I skipped dessert, others I skipped an appetizer; I generally planned to drink water; we have some counter service). I think I used $3/snack credit though. I definitely come out ahead - most of our dinners are signature dinners with an early lunch.
I didn't factor in the mug since it isn't something I would have gotten if it didn't come with the plan, and I'm not sure how much use I'll get from it - it will probably save the me the cost of a few drinks, but I figured that that would just be extra savings.
