OP, I think for you, the
DDP just won't work. It seems almost as if you're talking yourself out of it.

But if you're secondguessing IF it's right for you, then it probably isn't. And obviously by the research you've done (checking out menues, possible savings) it isn't a good choice for you, based on your personal food preferences. I don't think anyone here is going to be able to "convince" you of the perks of the plan, since you yourself don't see it.

And I mean that in a nice, not snarky, kind of way.
For us, we save money on the DDP. My DH likes to eat, as does my DD 11. Myself and DD 7 tend to snack more than eat. So we do alot of sharing meals. Not as in we only order 2 adult meals and try to share it, as thit is against the rules but as in DH will eat what's left on my plate so it's not wasted. Older DD gets a meal that satisfies her and DD7 gets a kids meal, which if not enough, she can have a little of older sisters or mine. And 2 hours later, when DD7 and I are a little hungry and older DD and DH are stuffed, we will get a snack and a couple of drinks to share. I like to plan, so figuring out the savings as fun for me.
With that said, we eat where we want to eat, not strictly where we get the best dining plan credit value. But every time we have saved $$, even including tip. DH likes steak, all of us are big seafood eaters, and those tend to be the higher priced emnu items. We rearely get an appatizers and any adult beverages we plan into out extra food budget. We figure on at least 3 extra drinks per day, usually a bottled water that we refill at the water fountains. And if we're doing Spectro or Fantasmic, popcorn and drinks to share. So for us the money savings are a consideration.
Another consideration is having the meals (except for the extras, tips, etc that I already plan for based on out food preferences) paid for. When I'm planning a trip, DH doesn;t want to hear it could be $3000 if we do this, or $2500 if we do option B, or $400 for option C...he wants to hear it will cost $xxxx. And that's what he'll plan on. He wants to go and know that everything is paid for, that could possibly be prepaid. So when I plan, I figure DDP, tips (I always figure 25% and an occasional appatizer), adult beverages, souveniers, gas $, meals for the drive down and back, resort, tickets, extra snacks...you name it, I add it into the costs plus a little extra. That way, I'm secure that even if we go over our estimated budget, it's OK because I padded it a bit, KWIM?
ANd obviously, if we could ever go during
FREE dining, that would be a MAJOR plus!!!