Recent changes including new nodes, comments, and new revisions whilst respecting user privileges and displaying via page & RSS?

I have a wiki style site running Drupal 5.x where everyone updates the site. How do I display all recent changes on my site in a page and a RSS feed so everyone can keep up to date with what is new on the site?

I need it to display a page and RSS feed for the following:
- new nodes
- updated nodes (new revisions)
- new comments

whilst respecting user privileges and showing diff's (using the diff module) where appropriate.

I have used the Recent Changes module which does most of this but it falls down in one key area: It doesn't respect user privileges - it displays all changes to all users.

I have tried to display this without this module with Views but the best view I can come up with only shows the most recent updater, so all previous updates to that node are not displayed (even if the last 20 changes for the site were 20 changes to this node, it will only show one).

I have raised issues for these changes to be incorporated into the Recent Changes module but they have not been responded to for months as I'm guessing that module is no longer maintained (last update to the module was March 2007).

To me this seems like a fairly crucial feature of a wiki style web site running on Drupal. I would be very surprised if many others haven't wanted this feature which makes me think someone has probably already figured it out. So I'd like to open this up to all you Drupal experts - does anyone have a solution for this that a non programmer can implement?