Blizzard,
I have ran a D4 Clan community that started weeks before the launch of D4. We have been going pretty strong for awhile but it has not been easy. I have seen good clans come and go. I stress this because these communities keep your players engaged longer and pull more players in. These communities could be a backbone of the game and may be overlooked since the launch of the game.
Some more minor QoL changes that would be a huge benefit would be.
1.) Seeing last time a member has logged into D4
2.) Seeing last time a member has logged into D4 (its that important)
3.) Still able to take applications when at 150 members
4.) Seeing clan message of the day when you log in, in clan chat
5.) Sorting of the clan list, search member, etc.
Some medium changes
1.) Clan Bank/Storage
2.) Better application/recruitment/and LFC (Looking for clan) system
3.) Rewards for and highlight clan achievements
Some Big Awesome changes
1.) Clan Bosses
2.) Clan vs clan battles
If these things are added it will build more clan communities. There are some more things that could be done but I felt these are the top/near the top of the best to add to support clans a bit further.
Flop