O dear lord yes, grab bag dragons would be the greatest thing ever, especially if they were fledglings! It’s something about the face, they all look like naughty kittens to me.
I can see how generating that many different patterns would be challenging, but fantasy unicorns and poads are also limitless in how colors and patterns can be applied to them; the trick could be to limit time and colors per piece, so nothing really complicated and time-devouring forces its way into the batch.
I will continue praying for the miracle that is grab bag dragons.