Doubt they are 1 and done, but how do you improve the "the lightest, least bulky, most versatile, and safest elevated hunting system in the world"?
Do you tweak the existing product and update on a somewhat regular schedule to get consumers to "upgrade" like Apple? Do you go the opposite direction and make a Heavy version? Add in the growing competition, finite number of hunters that will use/consider saddles and the product already brought to market and it makes you wonder what else can be done to keep the engine running. That goes for any saddle maker. I've used my sit drag for a season, but once I find the commercial offering I'm happy with I don't see myself owning multiples. I also don't see one wearing out if stored properly. Now climbing methods are a different story. Judging by all the methods I've tried and own, I think I like climbing trees better than sitting in a saddle.