I have read most of the pros and cons here. From what I can see an extension of any sort needs a time line and a management plan. It's very naive to think that a platform can live on forever.
Is it not better to remember ITT/maemo.org when it was going strong instead of letting it slowley fester into something hardly recognisable in the future?
Maybe there is a half way ground somewhere but I do think that without this site the N9 will falter into obscrurity even faster than it would without Nokias "input".