Add pinned topics
I don't think there's an issue for this or if the functionality is there yet so I'll just create one in case.
Add some way to pin a topic to an easily discoverable spot (the top would be best) in the groups, this is certainly moderator/admin only. I don't think these should show up the "frontpage", as that'd become a wall very quickly.
The pinned topics could be a slimmed down version of regular topics, only including things like the Title, Date and Author? This way they stand out just by the formatting?