Couple of things.Folks, I'm not saying it couldnt be appropriate for young readers. I was in Grade 5 or 6 when I first read it.
I'm saying 'Train your Dragon' isnt what I think of when I think of DL.
That said, going back to the original post that kicked off this tangent, I see now that I misread it, and yes you could totally have a split off line aimed at kids via books or comics.
So, I was incorrect in what the line was aiming to provide.
1. Train Your Dragon 3 is PG-13. It has, apparently, drugs, sexual content and naughty language. IOW, it's more adult content than Dragonlance.
2. Dragonlance at the time was marketed to the YA fantasy crowd. DL was never intended as an adult series. The primary audience for DL was the same as Harry Potter, or, now, How to Train Your Dragon. I'm frankly rather baffled how you came to the idea that DL was meant for an older audience.
So, with that in mind, why do you think that DL is a mature audience series?