Sorry for this being late
I disagree about the mealies, they have a very porr meat to shell ratio and have very little nutrition value whatesoever. In fact, without proper gutload they have less nutrtional value then carboard. With the chitlin conent being high, especially for young dragons, you get an increased chance of impaction. Freshly molted mealworms that have been properly gutloaded are ok on occasion.
I also disagree with you on the pellets. There have been a number of breeders who use pellets and salad only in the beardie diet, and have full grown, happy, healthy dragons. However the pellets must be soaked or they will absorb all the water, therefore the kidneys wont function properly if overfed pellets no moistened.
Rep -Cal pellets are the best most would agree. I myself think a diet with a few pellets offered in the salad ups nutritional valie and adds extra nutrients to the diet, but I still think a main based diet of insects and salad is better. Silkworms are the best feeder insect for beardies, and then you get to crickets which I would add for variety.
I'm interested in where you are getting your info, beardies often readily accept pellets added to the salad even at an early age of life. And I'm interested in where you came about with the info you have on how they make pellets also.
Now when you say "supplemented" with crickets and meaworms I hope you dont mean the entire diet should be salad. Beardies from the ages of 0-6 months should get 2-3 feedings a day each feeding as many insects as it can consume in 10 minutes. A baby beardie can eaily gobble down 50-100+ crickets a day. After the age of 6 months you should begin cutting back on crickets and by the age of 9-10 months thyey should only be getting 15-25 insects a week and the rest of the diet salad. With theis schedule, beardies can reach ovre 20" in less than 6 months. This is a proven method, but there are somethings that make this kind of size possible
-Good Gutload! http://cricketfood.com
has some of the best for crix
-proper heating (at least 95* to digest, babies prefer 105-115 while adults 100-105 due to higher body fat).
After reaching a healthy size, by lowering insect intake you decrease the risk of heart and liver disease, and you make life more healthy. On a similair schedule there is a dragon who is 12 years old now and still going strong.
To answer you quetion though, pellets can be used as the diet but its generally better if they are kept on mainly live. Although wild caught are healthier, you can make captive bred insects just as heaslthy with a good gutlaod.