Clan activities?

So as we all know, making a group your clan will put the group name under your gamertag and... thats it? Why can't there be clan activities for everyone to do, like clan wars, clan matchmaking, etc. Why aren't there more spaces for clan positions. Why bother having clans if the only real activities you can do is completing an achievement/trophy. Bungie its been like this for a while and even though I have met some cool people from these groups, there needs to be "additions" made to the groups and what we can do with them. Players. If you have any suggestions, feel free to speak.