"spine-less" tab as phone dock?

[Tenaja]

Since the phone and tablet have the same processor, could you remove the motherboard from the tab and just use the phone with the tab screen & keyboard? Keep the battery, and maybe some storage in the tab, but main storage and processor runs in phone... The biggest challenge would be a clean interface (i.e. not just the phone laying on the desk with a cable) that was upgradable. (Maybe a clip-on mount) That way when the next gen phone is released you could still use the tab.

I've been wanting something like this for years, but every option has been poorly executed.