Hi @it33 , thanks a lot for putting these things together.
I already introduced topic-focused channel headers, as they help me a lot. What i have in mind, is sth. what you guys do at pre-release/core with all the integratiion of the forum, the APRs etc. as i would like to see "updates" beeing announced via Mattermost , so that people could easily follow changes without acually following them 
Anyhow... I am really looking forward to know, how all the "others" think of linking Sharepoint & Mattermost .
All the best
Patrick