Seven year update.
I'm over 9000! (actually, one thousand)...
Planned Expansions (as stated in 2004 and the current status)
Atari 2600, 5200, 7800 (nothing here yet... Other than a FB2. Had about 30 carts at one time. Traded and sold all but a few. Might give up on Atari.)
Saturn (Oh yeah, did I ever!) 7 systems and imports everywhere...
Virtual Boy (plan scrapped - no longer want at all)
TG-16 (Yes, and also a PC-Engine Duo)
Neo Geo AES (FTW! System grail get! Highlight of my gaming career)
Neo Geo Pocket Color (Who can not have one?)
Xbox (Got 2 now, one stock and one modded and suped XBMC)
Willing to wait as long as it takes, or until I loose interest completely - Like VB