What a nice picture, though!

I'd say dragon HDs are neat, but the dragon eel really makes a poor use of them. What are you going to do with that many skill points when you don't have hands, which is required for performing a fair number of the available skills? Besides, this monster needs more options, not more numbers. You can't go overboard (heh) even if you give that guy, I don't know, DLA-6.