I've seen some interesting ideas in this thread. More than I could conjure up.
But I hope y'all realize some of these combinations spoken of will take more than a few matings. Some may be impossible or at least a minimum of 5 years and at least 10 generations of strict management and selection to come close to anything repeatable. This is especially true when mixing breeds of obviously different body types.
Trust me, those disparate genes will continue to crop up in sports for many years to come. Most of the breeds in the world weren't developed overnight. It took generations of aficionados to perfect some of these great breeds.