This is how the Destiny UI would look with some improvements

Destiny's elegant UI and general aesthetics design are one of its most redeeming qualities. That said, it's still missing some key functions and the community is here to the rescue.

Anrock1 is a Redditor with an eye for design. This person has designed some mockups for the Destiny UI. They add much-needed functions that are currently missing, some social, other are just practical.

The first is an icon that shows other players in the tower which activity you're looking to do. This will help immensly in finding other players to join you on the Daily Heroics and other activities that don't have matchmaking. There's also another text-based version here. And this how it would look like from your perspective.

This one adds some tweaks to the navigation mode. The icons on the right help keep track of your bounties and also a button that lets you get right to The Tower from any planet.

Perhaps the most important one here is this one; it lets you use the Ammo Synthesis during combat, instead of going to the menu. A progress bar can appear this way, to mimic the current behaviour.

Finally, this one adds an overlay (like almost every shooter) that lets you change weapons on the fly.

There are a couple more in there that are not as important, and I highly recommend you check them out.