What the...
I really hope you are joking or this will be changed before the final release.
Why on earth would you install packages to /home (/force people to install packages to /home because there is no room in the correct location)?
Even making /home a separate partition sounds a bit strange to me on this device...

That said:
As dpkg --help will show you dpkg --root=/home should install packages relative to that directory. I wouldn't be too sure they'll still work then though (i.e. path to some things might be compiled into the binary).