I recommend Flight Rising! It's quite a lot like this game, with the forums and collecting dragons and apparel etc., but with the option of breeding your dragons, changing their genes, and grinding in the coliseum with any of the dragons you've collected or hatched. You can buy gene change scrolls for any dragon or buy whichever ones you want that are posted on the auction house by other users. the site has two currencies--treasure, which can be earned through Fairgrounds minigames (mahjong, jigsaw, "higher or lower," etc), selling loot (earned in the coliseum or from daily gathering turns) and dragons in the auction house, and some parts of the trading post--and gems which can be earned by making sales in the auction house or purchased (like trading or buying C$)
My username there is
Dix.
here's a link to my lair!and here are two of my favorite dragons :)