Had a quick snout around. Arguably beats the likes of http://www.emulator-zone.com/
and a lot of the device specific things even if there are a few things missing. Interesting breakdown of consoles as well.
Naturally I would want a more hacking focused thing (FCEUX not being suggested sits a bit odd with me) but not everybody needs such a thing.
For hacking http://forums.warsworldnews.com/
is good for advance wars (it is the equivalent or better of any on your list for Advance wars related hacking), there are a few mario kart hacking type circles though I am not sure quite what goes there and the pocketstation is also emulated by no$gba these days (it is a little ARM device so the author added it to no$gba when his PS1 emulator was released). Similarly I am not sure I can quite agree with the no$ line being said to be based around speedhacks, though he has never really gone for cycle accurate the pursuit of accuracy is a big part of them (certainly no$gba is held as more accurate than VBA, though I must admit I have not quite kept up with VBA-m even if what I have seen there leads me to think not a great deal in that area other than sound core has been touched).
Perhaps also a bit on cheating might help -- though not all emulators have extensive cheap options the likes of emuhaste, artmoney and the similar programs have serious followings.