Look, you can talk about features, wants and needs all you want, but at one point you're going to have to deal with logistics and general feasibility of this project.
You're completely free to ignore the advice we give you, but you'll have to realize at one point that you'll need a large team (and means to pay them) working full time on this to make it happen. You're mashing some really difficult concepts from both game related engineering (persistent networked worlds, space exploration, etc) and operating system engineering together, and the way you're talking about it makes me believe that you don't have the required expertise in either of those.
Microsoft and sony might not like me to release a game wth that type of loophole, hut keeping it hidden in the developers console and through some code masquerading to obfuscate the intention on the platform relase could get me by.
Yeah, no. Getting your code verified on the major consoles is not a trivial task. Not in a million years would they let you run an OS which can actually access the system's hardware or which could run non-verified code in your game. I'd even be blown away if you could get any GPL licensed code through a console's verification process, due to the viral nature of the license and all.
Seriously, aim for something more achievable. Like I said before, you can still distill some interesting game concepts out of this.