I really enjoyed Bungie's past user interface design in the Halo games that they developed, in my opinion, I think Bungie has had some of the best menus, game lobbies and HUD's out of the all the games that I have played. I hope Destiny is no exception, but it is hard to get that perfect mix of functionality and pleasing aesthetics.
Look at Halo 4 for example, I find the lobbies and menus are pretty nice looking, but they don't offer easy maneuverability. Then with the in game HUD, I find it's way too crowded for my liking; I can't stand the way they have a bunch of arrows pointing to guns on the map and grenade warnings, etc.
From what we've seen so far, I really like the HUD in Destiny. My only suggestion would be maybe some changes to the players or enemy name-tags. Right now it seems like each players numbered rank is what you will first notice when looking at your comrades.
I'd like to use the name tags as a way to really differentiate team mates by including each players customization. I'd really like to see player emblems and own custom colours above their heads, much like Halo 2 multiplayer. Also the return of full Gamertags not being displayed until you look in the general direction of the player could be nice to have less letters cluttering your screen.
Above I posted a few of different ideas for in game name-tags, feel free to photoshop some user interfaces yourself!
-
I think part of the reason they had the numbers so prominent in the demo was to show two things. The large number of people in the public event That people of different levels can play together and still have a good time. I'm sure there will be a hide option.