I'd be interested in discussing something with you if you're still looking. I've been wanting to play a blue dragon for a while now and thought playing against Arthas (pre LK), or one of the Wrynn might work. We can mess with lore and have my blue dragon ally with Arthas while he is human where he acts as a steed and takes the form of a human mage to help him in battle. Then maybe we have it that he ends up dying in the battle against Sapphiron and so Arthas brings him back as a frostwyrm instead of Sapphiron.
For the Wrynn, my dragon could find Varian when he gets separated from his troops in northrend and saves him. He is then assigned by Malygos to infiltrate the Alliance encampment to gather information on the with the intention to destroy it but instead my dragon falls for Varian and aids him instead. For Anduin, he could come as a rep from the wyrmrest accords to advise and protect the new king.