I think the real power of a 'dinker' is the possibility of a recessive mutation that is new and breathtaking, that's where you can make some big money and a name for yourself. I'd breed those out and then breed the babies together to see if you can tease out any recessive morphs. That's basically how it all started. I'm not quite sure how we got so many co-dominant and dominant morphs, we surely didn't get them that way as imports? Maybe just a freak co-dom popping out from a couple of mormal looking dinkers? There's also the possibility that you have a 'hidden' enhancing gene that won't really pop until you breed it to other morphs. Take a look at the Specter and Yellowbelly, both are pretty normal looking snakes until you combine them and get an allelic combo that really pops (a Super stripe).
Yellowbelly:
http://www.worldofballpythons.com/fi...-belly/001.jpg
Specter:
http://www.worldofballpythons.com/fi...pecter/001.jpg
Superstripe:
http://www.worldofballpythons.com/fi...-belly/016.jpg