Sunrise/sunset is a tough subject because such images are so often seen and viewers are likely to be a bit blase about "yet another sunset". That said it is a favorite subject of mine.
In this particular jpeg rendering there is very noticeable posterization in the sky. So whether or not to pursue this image depends, I think, much on whether or not you shot in RAW or at least if the original jpeg is free of this distortion.
I like quiet images like this but I think general taste is for more pizazz (spectacular clouds etc.) in a sunset. All depends on what you want to do with it. If it's for your own enjoyment, by all means have a go in PP.