A pity.
There is no sense creating one for IPS4 anymore. What do you think, will it be possible to create such an app in IPS5?
There can be no limits on content types: forum topics, blogs or blog entries, calendar events, download files, gallery images or albums, clubs, records from Pages databases.
The review step should be mandatory, though. There should be no possibility to pay for something that is rejected by the community policy.