The next update is here! Enjoy.
There's some really neat stuff in the video (interview with Tyson Green, Lead Investment Designer for Destiny), with a ton of references to other popular games with RPG elements such as Borderlands, Dark souls and more. Another thing that stuck out is the idea of failing and the learning curve behind Destiny's activities. There are instances where it is 'accessible' as he mentions, but the challenge is there for those who want it.
On top of that is the idea that "there's really no wrong way to build a character", which IMO, is a huge relief.
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It also have MMO elements raids. And public events.