I guess it depends on what one watches this drama for... either for the crime solving parts or for the romance... I would have liked this drama more if the investigation story line was written a bit better... not saying that there should be less focus on the romance but saying that there are quite a number of loopholes here and there and that the plot development could have been better with the aid of plot twists...
Additionally, there is really not much unexpected romantic progression of the ML and FL in the later episodes... so there is nothing much to look forward to...
I think you should mark your comment as a spoiler... and yes, I agree that the amount of skinship/smooching in this drama is a bit over the top, considering the period of time that this drama is set in...