There is essentially no dragon build that will be unplayable so no matter how you distribute training points or what you put on your gear, you will likely not have any problems having a playable build. Though as Calyndrell said, if you want to be exceptionally powerful that does take skill. It's comparatively easy to get a maxed dragon character, but it does take skill to make that maxed character more than "passable." There's quite a big difference between a level 100 dragon who has put little to no effort getting there and a level 100 dragon who has put in a lot of effort fine-tuning and tweaking their build to be as powerful as possible. Essentially the difference between a dragon who dies in the first 10 seconds of an epic fight and a dragon who stays alive the whole epic fight.