Wow, I stepped away for a few days ause of work and got a lot to respond too, lol. I only have about 15 spare minutes today, so I'll spend it trying to be as thorough as I can here.
I think this is a great idea and it might even make friends and family more enclined to watch you play Dwarf Fortress and maybe even try it themselves!
This is EXACTLY the idea. I'm really hoping that the small novelty bought by the machine, combined with its ability to handle the game in a serious and non-novel manner will help bring more people to DF. On another side note, I am also trying to make this a cost effective option for those serious fans who are short on funds to be able to enjoy more than a micro embark (though I know those have there own merits, it's nice to have options)
I don't think you should switch off the network.
This has been addressed in our last meeting. We are actually adding a self updater (manually started) which turns on the wifi during the update and turns it off afterward. This way updating is super easy (on our side) and security is kept. You will be able to easily re-enable or otherwise mess with the system as well since we are not turning off the terminal (accessible via standard hotkeys)
I play over SSH (via a modified version of PuTTY) and I have a custom script and executable that locks the DF account to the game using Screen. That way I can always resume the game, wherever I am, as long as I have Internet access.
Personally, I want to do this to my own console once I get it up and running, but still limit its access to the internet. Just so I can play anywhere in the house. I love novel things like being able to do that.
So this means that it won't lag as bad with pathing issues as it does normally?
All this system will do is optimize the system environment for DF. Whether or not it will actually run better than your personal computer is purely dependent on your personal computers environment. For me, it won't run any better. I tend to go to decently great lengths to optimize my PCs performance for DF when I seriously sit down to play.
I don't have much to say on the technical side of things, but you better cover it with menacing spikes and engravings.
It will have menacing spikes, and an engraving of Armok. I plan to use his eyes and mouth as the path for heat to escape from the top. Considering also gluing on a beard if it doesn't look to cheesy.
What linux distro will this be based on? (and all other highly techy questions)
I will need to get back in touch with Urist McProgrammer on his progress. We've mostly been discussing the features needed, and his status on implementing them. We are close to the prototype stage 1 (hardware only), and oddly, I haven't asked him about which distro he is using yet, lol.
Wait a few months for the mobile Xeon E3 SoC industrial/server boards to start showing up
This is really related to longevity more than functionality. If the system is built well enough, with the increase I've seen in needed computing power, it will remain a relatively good system for over a year. That said, this would increase it's longevity, but also the price. I'm still working to find that sweet spot, but I also believe that there will likely be more options to the DF console, and if it's popular, future versions once the hardware gets to dated.
Linux is happy to boot off cheap USB drives, once it's booted you can run from ram
The original idea was to do exactly this. People would update their system by just updating their portable USB stick and everything would be easy. But that doesn't really feel much like a console
In reality, the reason we are not opting to do this is that hard drive access has a generally minimal impact on the gaming experience, and it is WAY cheaper to buy a decent little SSD than lots and lots of RAM for those big, long historically significant worlds.
This would be more like $400 option but it's end of life could be spent as a nice little server.
The current idea will have an end of life as a nostalgic mantelpiece. In all honesty though, the system could become a little backup PC, since everything is just standard computer components, and the parts are by no means -low- end right now, even when it's no longer a DF powerhouse, it can still be great for other small things.
Anyway, sorry to rush the last few answers, wife is calling GTG! I'll be back to answer more before long.