I just completed this game and did it as non-lethal as I could but I don't really want to start an entirely new game just to play it in a different way. I would have loved it if they added a new game + mode that the player could choose so they can have fun and mess around with their powers. I really want to hear other people views on this so please reply with your thoughts.

http://www.youtube.com/watch?v=_eqOMI8_txw

Doesn't need a NG+ mode to have fun and do THAT.

OK, OK, I am done picking on people because they want NG+. Here's the thing, NG+ would be just an option and not forced on anyone. Great, awesome, fantastic even! Unfortunately its initial implementation was put off due to the fact that the devs believe the replayability and different outcomes are enough to make you play it again and again and still find the game enjoyable. What will NG+ due for Dishonored though, that's the important question.

Mark of the Ninja had NG+ and it was great to see some of the early levels done with different gear and handled in a different way. Same thing can happen for Dishonored. Imagine some early areas if you had the second level of Time Bend or some other combo of spells that will allow you to have a large amount of fun. Problem is, apart from keeping your equipment and starting anew, there really isn't anything else to NG+. I am sorry but there isn't.

Now you can say "Well what else could there be? Why shouldn't it be made just for mindless fun alone?". Because I don't want it to. Gaming is not just mindless entertainment to indulge in our free time. It's becoming into one of the biggest and best storytelling mediums we've had up until now. It is art, and it can be better. Now, we can throw gameplay ideas around about what NG+ could bring, like a higher difficulty and so on, but I don't want that kind of discussion.

I want to explain why NG+ isn't all that important right now. Of course, to some people it is very important because they get to keep what they were dealt with and put in interesting situations. And I respect that being that way myself, but I won't make a big deal out of it like some people have and tell everyone "THERE SHOULD BE A NG+ BECAUSE I LIKE IT AND SO SHOULD YOU" (not you OP, talking about people who've made threads about this before).

I still question the lack of an in-game cheat system and NG+ sometime because they are not hard to implement, even after release would be OK via patch. In short, no reason NOT to do this unless NG+ somehow unbalances and breaks the game completely at some points, which would be really bad, or there are more important things on the list to be either patched and the team is still listening to feedback. Also, try to play as much of the game as possible if you enjoy it and see the difference in variation based on your actions and choices.