Would it be possible to import a custom dragon model for an addon? I really want to add some new models that dont really fit with the basic one there already is. Should i just import a model or is there somethign i need to do for the game to recognise it?

This has crossed my mind a multitude of times.

I would LOVE to implement a custom model feature.
Issue of it is, I am in strong beliefs that mojang is going to implement that sort of system themselves relatively soon, and I can then latch the dragons on to that.
The truth of it is that that’s a lot of work for a modder to implement only to have to scrap it later on for a much better solution.
Be on the lookout, I will introduce it when mojang allows eventually :)