I can not really help you on the cross as I have no experience. However, I do prefer single strain or closely related strains (color wise). As much as I enjoy and like to see many strains in one tank, I feel it is initially nice but then almost becomes distracting. Nothing like seeing a big school of fish who all have a similar look. I have had tanks where the fish were close in appearance yet different, such as what you suggest above and I like that look as well. You would have a cool visual effect, with the solid blues and the blue with some red markings, maybe even some scorpions or something like that? If you select some various pattern turks it may look like a phase from solid blue to some pattern and maybe you get one or two full pattern, would be a nice progression tank in my mind.