We've found in the past that we can split 2 A CS meals between dh and ds8 and me and ds4. The we might use the 2C CS credits for something at breakfast. Considering that we're doing a TS dinner each night I hate to have so much to eat for lunch every day. My 8yo does not need an adult sized double burger (although he'd eat it, believe me) and neither child eats PB&J (yuck!) or those cold chicken pieces (yuck x2). So we find that we split the meals and everyone is happy. At Pecos Bill's there is the toppings bar that helps "expand" dh's burger and I purchase an extra bun for ds8. As for ds4, he eats like a bird and much prefers an Itzakadoozie and a popcorn for lunch, so after a bite or two, he's done and I eat his portion.
While I wish the WDW would offer a kid sized portion of whatever the CS restaurant is known for (burgers at PB, ribs at Cosmic Ray's, fish/chips at Columbia Harbor House), it doesn't seem like they will, as they dropped the kids' pizza meal from somewhere because adults were ordering it (heaven forbid an adult should want a smaller portion of food). So we'll work with what we have and frankly, considering we're going during
free dining, if I need to purchase an additional entree (you can request no sides and pay less, from what I hear), I'll do it. Not worth stressing over frankly.
We totally enjoyed the meal plan each time we've utilized it, and never had any problems with it. So we'll just go w/ the flow and perhaps check out some CS options that we've missed in the past, if they offer a more tasty selection. When in MGM, there is somewhere (I wish I could remember) that offered a kids asian noodle bowl that I had one day which was really tasty and just enough for me. So if we're there, I might order that and give the kids the adult choice. Hey, whatever works at the time.