It depends what your trying to capture if your trying to capture what is there and how you saw it then Curves, Colour, Saturation adjustments I see no problem with. Lets be honest we have all had colour casts removing them and colour correction is needed and even improves what we consider our best photos. Sharpening is a must that really can make or break a picture in my opinion anyway.
If your trying to capture whats in your minds eye then theres a whole world of PP solutions... and I like some of them the bleach bypass look is pretty cool
I think in your situation theres nothing wrong with what your doing infact you could possibly do a little more
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You cant fool all of the people all of the time, some of the time all of the people will some of time but not all of the time as some of the time all of the people will some of the time but all of the people will not all of the time
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