I got a pretty good idea.
The upcoming DLC should have this, and if not... then Destiny 2 definitely should.
Here is the idea: For the tower & the reef, I feel as well as most guardians in Destiny... that there should be mini games. I'm sure everyone would enjoy killing some time playing mini games at the tower with friends or randoms. Please put this, it'l be a fun side thing to do when we're not out doing actual missions. Hopefully we can see something like this in Destiny!