I guess the price is the biggest worry for all of us. I've been used to build myself a new PC every 2-3 years whitout spending more than $700 (no monitor) and it did the job. If this new Amiga costs over $1000 but does everything we want for 7+ years like the old models did then its another thing.
I have difficulties to believe in any hardware that last these days, i'm so used to trash or resell all my stuff regularly! The only electronical device I kept for more than 10 years was actually an Amiga!
Now they seem to be telling they will sell a complete system which means custom case & custom keyboard/mouse. These are expensive (look at apple) so I would expect paying around $1200 for the whole deal and be ok with it.
I don't own any game console, cell phone, ipod or whatever so investing in this computer is something I would consider.