The Aztecs invented the wheel, but only used it to make children's toys. If the Aztecs had invented a tablet with a pressure-sensitive stylus, it would look a lot like the HTC Flyer.
In a tablet market crowded with companies trying to knock the iPad from its throne like kids at a carnival dunking booth, the Flyer tries to make a splash with a pressure-sensitive stylus. Without the stylus you have an unexceptional, expensive Android tablet with a 7-inch screen.
Unfortunately, shelling out for the stylus gives you an unexceptional, even more expensive tablet with a pointless gimmick.
Having a pressure-sensitive stylus is important to all sorts of people: artists, graphic artists, commercial artists, um, illustrators, people who draw, human beings who create works of art using lines and color... OK, it's pretty much just artists. You don't need a pressure-sensitive pen to write a grocery list or draw a quick map to the nearest brewpub. That's why rollerball pens outsell Winsor and Newton ink brushes.
So of course they're going to put enormous effort into making it useful for professional artists, or at least aspiring professionals, right?
Apparently not. It's as if the Director of Directing Directions stood in front of the development team and said, "OK, we have to innovate here! I want us to make a drawing device that's of almost no use to artists! Brainstorm! Go!"
"What if you could only draw in eight pre-chosen colors?"
"Great, Hendrickson! Brilliant! Anyone else?"
"Ooh! Only give them seven drawing tools to choose from! And one of them's the eraser!"
"Nice, I like it. But it needs something."
"Um...oh! All of the drawing tools use some sort of half-assed 'natural texture' so you can't draw a clean black line!"
"Ah, great, that's brilliant! Style over substance, that's what I like to see. How about you, Fleming? You've been pretty quiet."

