aside from blu-ray, those are all hard drives and upgrades.. your list looks long but it's not really..
My point is that I've done a lot to my computer over three years and it all fit inside.
What all my crap would look like if the 2010 MP used the new tube design:
External: Blu-ray
External: Win 7 SSD
Built-in: OS X SSD
External: OS X HDD
External: Win 7 HDD
External: exFAT HDD
External or N/A (or Overpriced Obsolete OEM "Upgrade"): upgraded GPU
External: upgraded USB
External: wi-fi upgrade planned
If you want to categorize things as "expansion" or "upgrade" or "hard drives" to make them not count, well, ok.
It's irrelevant anyway. The iTube is coming. You win; I lose.