People (lens snobs ) will shoot me down for this but nevermind...
The 70-200mm is obviously an amazing lens and you can get a higher proportion of good shots in worse conditions...
But depending on the shooting conditions you may or may not need it and just bedside its one of nikons best, doesn't mean you neccesarily NEED to be that extreme.
You can get perfectly sharp shots with your lens but the lighting will have to be on your side.
If you're shooting wide open with that lens then its not fantastic by any means, but what are you shooting, when are you shooting it and what are your lighting conditions, most important, what budget ?
Its really quite unfair to offer any advice without knowing all the variables.
Those questions aren't really pbotography exclusive, its simple problem solving. Before a solution is offered, the benefits of that solution should meet your requirements.