Understood..... i know what you mean, and i shouldnt have jumped overboard either, sorry for that.
And yes, like i said, i know the graphics aren't as good as they could have been, However, this is there first game, and for the first made by 343i, it IS pretty darn good, you must admit
Cortana may not be dead, and as for the Didact part, they wanted to make it more thrilling when you finally DO fight him