It is true that in my 3 + years of unicycling my preferences have evolved, but my evolution is not unlike the evolution of most riders in that preferences change as skills change. But my skills did get to the point that a Schlumpf was the next step, so what I’m saying is that if a mfg does not pay attention to their entire constiuency, then their product will not be as accessible/usable, which will decrease sales, decrease appeal, etc…
Now Napalm, you are a strong, young guy, so what works for you is not the “norm” for an an XC rider, in the same way that Turtle is not an example of the average muni rider. So even if you like something as it is, there are many riders who are dissatisfied with the very same product.
Schlumpf owners are a unique population, both for their willingness to put up with a fickle product and their ability to pay a steep price to access that product. There are far more unicyclists who don’t own a Schlumpf than do, and there is a fair number of folks who have given up on their Schlumpf for various reasons.
Realistically, the sales for Schlumpf hubs has been fairly flat, for many reasons (cost, access, durability, small market), so if this aspect of unicycling is to grow, then it needs to change:
More gear ratio choices, disc brake, fewer user end issues, and a improved access. For now and the immediate future, owning a Schlumpf is akin to owning a Maserati; the nearest Maserati dealer to me is in Atlanta, four hours away and gawd forbid I need parts or I break down while driving around town.
Say what you will, but you know I’m right, so let’s not beleaguer the issues with Schlumpf, just as you should refrain from telling me that my lack of experience are the reason I don’t like riding a Schlumpf 
The next generation of Schlumpf buyers will be like me and mine vs you and yours, ie newer riders with evolving skills.
I just wanna be a bug on the wall when you crawl out of bed at age fifty and complain about your back pain to your wife 