Well it's got a lot of elements from a lot of genres (sci-fi, fantasy, mythical, historical modernization, mystery) that are popular for good reason and it'll be made by Bungie so the mixture should be on point (with Bungie's experience in sandbox shooters and MP Matchmaking, gameplay is going to be revolutionary to say the least). Plus there's the bonus that all of this is going on in actual locations inside our solar system which has been changed by a 'hint' of Space Magic to spice things up. That's definitely something that personally, I want to experience. It's up to you whether you'll like it or not. I'm not exactly sure what you want explained, so there's the broad description of what I think will make Destiny awesome.