My two cent review of what you get for $500 million dollars spent on a game.
The Bad
1. Story? What story?
The game's storyline could best be summed up as "I could tell you all the shit that happened before now but storylines are for faggots." There is nothing but the most cursory nod given to history and there is no story at all for the game's boss fights.
2. Bungie should stop calling it the Next Generation of FPS.
I have not seen anything in the game that makes me think "Wow! Neva been dun befo!"
3. Don't call something a Social Area if there is no socialization.
"Social Area" seems to mean you cannot kill stuff. The NPCs in the game are somewhat less engaging that cardboard cutouts. Considering #1 above, this game really needs to be more than just point-and-click shooting, with missions that are literally explained in-game as "There's a really bad [insert whatever] here. You need to kill it."
4. I don't know why anyone would use certain guns.
It could just be my play style but I find the Hand Cannon and the MG are absolutely dominant. Comparatively, the other weapons are almost completely pointless to use, yet the game forces you to rely on them when you run out of ammo.
The Good
1. The game is addictive.
While addictive does not actually mean "great", I measure a game partly by how many hours of gameplay I can get for my money. I expect to get a lot of gameplay out of Destiny.
2. Combat dynamics are good.
There is good feedback for some of the weapons and it's clear that a lot of thought and planning went into making the world layouts conducive to strategic fighting. It's something you can take advantage of right away. The game still does not fully utilize all of the potential that the "landscaping" allows for. Large opposing armies could have epic, glorious battles on the terrain.
3. Hope for the future.
The fact that Bungie will continue to develop the universe (according to them) and that they have the opportunity to make a richer, broader gameplay environment could bode very well for Destiny. While the game may feel a little empty and repetitive at the moment, there is literally no end to what they could do with it from here.
Summary
Although it may not sound like it, I consider the good to outweigh the bad and I do not regret buying the game. I expect to enjoy it for a long time to come.