Group - Forum upgrade

Im looking for an upgrade to the Groups Forums.

At the moment, when you click on a group forum, (group mod) you are taken to a page where you can add topics and reply to those topics. This means all topics will display in one long list on a single page.... 

Whereas with the main Dolphin forum section, you can create groups, forums, THEN topics.

i would like this upgrade to the Group forums. So that I have the ability to create individual forum groups within my main forum groups!

For example, on the SPORTS group, I can then create a separate forum for football, one for rugby, one for tennis etc.... each with its own page, just like the main Dolphin forums have.