As for the marketing side, I cant say I care very much for aestetics...
But if you packaged your seeds with the date you harvest/package the seeds, and have all the strain info on the packaging, that would be what I'm more concerned with.
I will say though, dinafem packages their seeds in little metal containers with a pop top lid (you press down on the lid which pops it open, then squeeze the sides of the lid to close it back on the container), which I thought was pretty cool.
But like I said, so long as your giving out the pertinent info, and the strain itself has bomb genetics, that would be what catches my eye