However, it is a solution aimed at an entirely different set of problems
That may be a reason, people who need the power are currently using different platforms like mBed, Maple et al. They might use a Due when it's available.
I will be watching to see the types of projects that people create with them, and that may increase my level of interest.
If you build it they will come. Maybe. We get posts here along the lines of "How do I do speech recognition while simultaneously controlling 10000 LEDs" or "How do I do pattern recognition from a digital camera".
Currently we say forget it, maybe when a few projects come on line that do these things people will see the possibilities.
OTOH maybe Arduino is doomed to a life of controlling wearable LEDs
Maybe the Due will need a "killer app" to show people what can be done, thinking about that now though I can't think of a good example. Some robotic control or similar?.
I wonder if there are enough people that actually need a better processor.
Maybe not, does anyone know how many mega2560 boards are sold, those applications would be obvious candidates for a SAM. People are always running out of RAM though so even if you don't need the grunt the extra memory would be nice.
The last thread you made may have had more interest in the Micro-controller section, at least for the Leonardo it has worked out to be 8 pages so far.
Yeah, I may repeat it there. I use the "unread posts" link and therefore see every section, but others may not.
As for the soldering, we are just going to have to get used to that, I've done some and it's not that hard, as mentioned others have done plenty. The alternative is to do a breakout board, with 144 pins though it will be a challenge to make it breadboad friendly.