I helped do makeup and facial hair for one drama in 1976. My brother has been in at least 2 dramas, my dad only one. It does seem like the same folks are involved. Think it has something to do with who is assigned the as director, how close they are to the convention city, how many pioneers (some more of that service time they get to count). My kids loved the dramas, even tho some of the acting was corny. Its all lip synced, of course, for that united in worship thing, sort of like the canned music. I've missed the last few years of conventions but don't think the dramas are what they used to be. More of a modern flavor, not as long, like everything else - not terribly spiritually enlightening or encouraging.
Mrs R