I mentioned the Collectors Club as it currently exists only to point out that its membership represented a rather significant portion of the sales of the first batch and to note that it's impact on future batches should be considerably less because of its structure and the way future Mules will be offered to its members.
As for the rest, if you can get past the words, "Mules Only" club option in my post, you might realize that what I describe is, in fact, very similar to what you are suggesting, except mine contains no "pre-pay" option. That was an intentional omission on my part. My feeling is that pre-payment would add several layers of logistical issues for Spyderco, foremost being that the price of a given piece may not be known until the batch is nearly ready to ship. Federal and state laws governing how long before shipment someone's credit card can legally be charged for merchandise might also be of some concern.
My thinking, which may very well be flawed, is that everyone, or very close to everyone, with enough interest in this project to participate in it checks their primary email at least once every two weeks. So, in my own way I was "keeping it simple", I would have to conclude from your reaction to it that our idea of simple is just a bit different. At any rate, it was just a suggestion, and, for whatever it's worth, one made by someone with no dog in this fight. I trust Sal to read through all the suggestions made here, adopt any he feels useful, adapt some that might be useful with a bit of tweaking, and politely ignore the rest.
Paul