Banana's are going to be the next obvious animal to enter the market at affordable prices. To look at morphs that are going to take off in the future you have to look at what's new. Frankly there is not a whole lot of new animals being introduced to the public. BHB was responsible for the pinstripe, and they just started producing sunsets. It'll be a while before it reaches the hands of anyone else - but they are setting up to be the next big thing since Banana's IMHO.
In short,
Bananas.. followed by sunsets in the future. Just my :twocents:
Obviously you have your Desert Ghosts, and an assortment of other genes, but honestly - Nothing that I find overly impressive.