Basically the idea involves a set of mechanics that bungie already have
Say you where to join a clan (which atm can be one at a time )
You would unlock a social space
A clan base
You would be able to have 64 people per lobby
Game chat would be optional
U could hang out with your clan
Next there would be a sand box mode for people to use (exists for dev use only atm)
You would be able to place your own crphtach and post master
And all the other vendors
There would be a special board / vendor to place in your clan base - the assignment board
A place where u can post a lfg post in game
And it would match you with others that are looking for the same match automatically
Back to the base design idea
You would be able to pick out object and place the into your world
This i think would lead to a cool fan made base design where people could en acknowledged for making the base that your clan love
So imagine this a steampunk styled base or even a fallen base design
My personal favourite would be a base to replicate what the cabal emperors throne room would look like ( having his advisors as vendors)
So bump or leave idea down below