I think they should produce more knives with special features, and produce them quicker. The only people that benefit from smaller production numbers are the scalpers. I don't think there would have been such a frenzy with the green PM2 if it had come out a few months after the preorder, and they could have produced 2 or 3 more sprint runs since then. I have every faith that Spyderco has the ability and expertise to do this if they wanted to. Maybe only a few people know why they produce knives at the rate that they do and those people aren't talking.
Spyderco could certainly sell more knives if they had larger and more frequent sprint runs. The average knife enthusiast probably only wants to own one, maybe 2 black G10 PM2's. For that matter I don't own even one and don't want to own one. But a lot of enthusiasts would own a blue one if they are more available, and a green one, and a grey one, and a CF one, and whatever other variations they could have brought out over the past 12 months if the green ones had been produced on a reasonable timeframe.
And do not be telling me that it took Spyderco 16 months to "get it right". That is doing a discredit to the company and their ability. I have every confidence that they have the ability to take any steel that they wish to use, go through a 1 month or 2 month R&D program for how to grind and heat treat it, then put it into production and have the knives ready to go to the distributor shortly after that.
As for future steel it should be a given that steels will evolve. When I started buying knives years ago the popular brands were using steels like 420 and various grades of 440. Since then common production knives have stepped up to ATS34, 154, and now S30V. Spyderco doesn't but another popular company has multiple normal production models in M390 steel. Maybe someday Spyderco will have production models with steels like M390 or 204, and maybe more models with M4.