A few feature requests, that I'm hoping
@ozzy47 would consider
A) Able to set location of group. (using Google Maps. Classifieds addon does this in a similar fashion).
B) You can check out groups by seeing their locations (if they have been added by the group owners). Easier to find new clubs, if you are looking for something in your area

(even if they play online, you may want to connect with someone who are in the same country/state etc).
C) Custom fields support and filtering. The owner of a group/admin in ACP, can add various custom fields to the group, which can then be seen on the front page of the club. This will allow you to customize further what you use the groups for on your websites. (either it be gaming, work related etc).
And just as important: Then on the club main page, you can
filter groups by these values. So for example you have a group that mostly focuses in A or B activity. Then you can add this as a custom field, and it will be easier for other visitors to find what they need when they filter the Group front page by using these filters.
D) Option to show user group in the postbit on messages. A small icon and the name. (click it to go to the group).
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(+ I would easily pay extra for this addon to have some basic connectivity to XFA Tournaments addon. Since there are no other tournament addons on the market for XF2 (and groups addon is frequently used for gaming-related communities), I think just having a few basic integrations would be a huge uplift for this is a complete group/clan package.
So for example being able to show tournament wins on the group page. Or joining a tournament as a group (and selecting what members to include) in a group vs group format.)