I like the true surprise factor. I don’t think they should be separated out into different “types.” First, it’s too narrow–there were far more than just “spots and stripes.” Second, the point is to be able to trade them, which helps build community. Third, it increases the chances of some people who want them not getting one because smaller batches mean fewer uni’s and some people would want to get one (or more) from each batch, as opposed to being limited to 1 or 2 from a single batch.