On a 60" TV it definitely is. I upgraded to that size recently and noticed how blurry a lot of the last gen titles were, something I didn't notice on a 51". So the size of your display definitely plays a part.I understand that 720p isn't the desirable res for a lot of people here( and as was said isn't the final res for the game) but "blurry mess"? More than a bit hyperbolic there.
As for gameplay, I'm just not feeling it. Flinch is damned annoying and almost had me throwing my controller, and I'm glad it will be removed. But with it in, I'm probably going to sit out the beta or else It'll sour my opinion of Halo 5 MP before it releases. Also, non-power weapon pickups need to be more obvious. The map (Empire) is too damned dark and making it brighter should make weapon pickups more obvious.