Sal, this probably should go in a new thread but I'll go ahead and leave you my thoughts on the Stretch here. First of all let me say that the Stretch is a design that I dismissed years ago after handling one only to later buy a sprint hap40 and have the knife become one of my absolute favorite Spydercos.
So first let me talk about why I initially dismissed the design after a cursory inspection. The first and most important reason is I THOUGHT that the handle did not fit me well. The reason I emphasize "thought" is because I did not like the way the knife felt with my finger in the forward choil. The grip felt a little awkward and the choil felt not deep enough. What I came to realize after owning the knife though is that (unlike other models like the pm2) I just never use the choil on this particular model. I don't know if that's because it is uncomfortable or if the handle just lends itself to the rearward grip but I always hold this knife without my index finger in the choil and in that grip, the knife is extremely comfortable. So for me, I think the idea of a model based on the stretch but without a choil is enticing. It would allow me to get my hand closer to the edge and likely add a bit of cutting edge. --For the record, I know that the choil was modified on the new stretch but having handled that knife I have a feeling that I will also not use the choil much on that design. Again, I cannot say exactly why but I think I will hold it further back like I do the Stretch.
Ok, the other reason I wasn't initially drawn to the Stretch is because the drop point is just too extreme and too abrupt for me. I don't mind a drop point, but personally I like them to be more subtle so they don't impede the knife's ability to pierce or puncture so much. This more subtle drop also makes it possible to use the tip with the edge "up" or "out". This is a cut I use often and it is very difficult to use the tip of the Stretch in this way. I also think that heavy drop right at the tip makes the blade profile rather, errr....unhandsome? I'm typically not overly concerned with aesthetics but if a shape doesn't work as well for me, AND it's ugly, it starts to get bumped down to the bottom of the list of needs.
My solution on this was to sand the hump down to a flat spine which essentially resulted in a blade like the pm2 with the back hollowed out. I have kind of fallen in love with this shape as it gives me the functionality of a straight spine but keeps the blade profile narrow, which is one of the very functional aspects of the Stretch's blade shape. I think it's worth noting that I like the performance of this blade shape so much that I am actually considering modifying some of my Paramilitaries to have the hollowed out back and make a sort of Para-stretch-itary.
Here's a shot of a modified Stretch next to a paramilitary 2 that shows how similar the two shapes are after the mod.
Anyway, there's a bit of longwinded feedback for you on the Stretch model. As I said at the beginning, the knife is one of my favorites in the Spyderco lineups and I would hate to see it go away, but some new and different designs based on the original would be exciting.