I'll just throw something out there: The pkg file for Home probably has to be hacked into to make it so you can go into Home. There might be a way to make the client not look for Sony's approval, but I don't see that happening with a simple XML "document."
Also, Home comes as one download (probably just the apartment), and then you have the option of downloading everything else so things will load faster, or at least if you don't want them, you don't need to wait that extra time downloading them instead of going into Home and so it will save space.
That's why I think Alex's Home data is over 700 megs when all we get are 192, 199, and 225 MB files.
And just to let everyone know, there is NO WAY (that I have found in the hours of scourging the internet) to make this work on Linux.