I have lots of experience feeding crickets, mealworms, superworms, roaches and mini-mealworms (T. obscurus) to many different species of geckos. Indeed, no-one has been able to explain why some geckos like leopard geckos do extremely well on a diet of just mealworms.
For many years, due to studies like the one quoted, I fed my leos only crickets. Most other leo breeders fed exclusively mealworms. What happened was, no matter how many crickets I tried to stuff in my leos, they simply did not attain the size my fellow breeders' leopards attained. So, after doing a lot of experimentation with food items on the leo, I found that this works best:
Hatchling to subadult: Mealworms and/or small superworms as primary diet to maximize weight gain from the higher fat content in these food items. Occasional food items like wax worms and crickets are fine.
Adult: Mealworms can be used as a primary diet, however, a mixture of food items is best, and a primary diet of superworms works well. At this size the gecko is no longer needing the fat in mealworms or superworms so crickets are also a good choice for primary diet.
Superworms have a higher "meat" to chitin ratio than mealworms - I have been using those instead of mealworms for some time, even before the great "shortage" of mealworms we are now experiencing.
Of course each type of gecko has a feeding regimen that works best. For example, I work with a number of "micro-geckos" which do best on 1-2 week old crickets and, if they are big enough, small superworms and T. obscurus. These would be P. rangei, T. fasciata, P. androyensis, P. tigrinus, P. fasciata, Coleonyx and two types of Tropiocalotes
As far as supplementation, I have been using Calcium Plus by Allen Repashy for over a year and have had the best results ever in my over 25 years of working with geckos. This is an all in one supplement and eliminates the need for any extra calcium placed in the geckos' terrarium, which we have learned now is actually harmful when using a supplement that contains an adequate amount of Calcium.
If I had any advice it would be to provide variety as much as possible and do pay attention to the breeder's advice on age appropriate food items. Many times it is beneficial to stick to a higher fat food item during the rapid growth rate period of a gecko's life.