I'm not usually one to preview a product, I'd prefer to have it in from of me but I'm really excited about this one. After switching from the QX7s to the X-lite (seemy review here) I haven't looked back, to me it is better in every way EXCEPT I couldn't natively fit crossfire. I've tried this 3 print here but have never had a lot of success, in fairness because my 3d printing skills are poor. Also you will need to sortout your own wiring.
The good news for me is that Banggood have just released a JR Adapter for the X-Lite that will do just this. I love the fact that it is injection moulded. It does however look fairly 'minimalist' so not sure how it would stand up to abuse. Also the wiring solution looks fairly ugly but it may be possible to tiday this up.
Remember it wont fit into your standard case with the crossfire attached, so you'll need to remove or find a larger case for transport.
In summary I don't this this is a perfect solution by any stretch but could be good enough for those without access to a 3d printer or those who, like me are just no good at 3d printing.
The JR module adapter is available on preorder from Banggood for about $8 at time of writing. It will accept Crossfire or any other JR module.