Tanax

How many communities out there uses a "Feedback & Suggestions" -forum to handle feedback regarding your site and suggestions? This suggestion would make your feedback forum much easier to manage and aswell as easier to see which support-topics that has been solved(and not just locked - big difference).

The edit history is something I honestly think IPB should definitely add, its an outstanding feature.

However regarding the rest of things you mention they can already be perform with the tools at hand, you just gotta look around a bit.

And revamp the Moderating Team Page. Allow us to indicate when we make a usergroup if this usergroup is sfaff. if it is, display the color-formatted names on the moderating team pages separated by groups. The groups will be listed in order with the most power to least... you can come up with some way of detecting which group has more access. So, admins would go up top, then co-admins, global mods, mods, etc. Just an idea.. Moderating Team page hasn't really changed in years.

This idea can be achieved with soft-delete.

Only allow your moderators to soft-delete.
That way you can easially see which threads has deleted items in them and at the same time be able to review and revert, if neccessary, the post(s)/thread(s).

What you need is another permission setting. There is already 'Read topics' and 'Reply topics', another would be needed, "Read topic replies" or something of that nature.

I think there is actually a hook that only affects guests so that they can only see the first post of each topic but not anything after that. I'm sure if you contact the author of that hook, they could make one to let you set permissions on who could read the complete topics.