Dealing with corruption cases

Our long-term national aim is peace and prosperity and the immediate aim is to hold a parliamentary election towards restoration of democracy. What I find is a change of priority by the caretaker govt. in our national agenda. No one will deny the fact that corruption has taken roots in all spheres of our life, that is why for the last few years we are being identified as the number one corrupt country in the world. The present govt. is found to spend most of their energy without focus on eradication of this evil and that too within a short period allotted specifically for the particular job of holding the national election. I find hundreds of people including politicians behind bars for corruption cases. Moreover, for these cases thousands of people are engaged in dealing with them with heavy pressure on the govt. exchequer. The newspaper reports show how the govt. administration, prisons, courts, police department etc. are engaged in dealing with the corruption cases. I don't support ignoring the corruption cases but would like to suggest the following which may be more beneficial for the govt. and the country as a whole:
I would suggest dividing the corruption cases into two categories: Major and Minor. The major cases should be tried as per the country's existing rules while the minor ones can be dealt with by the departments concerned. If someone agrees to return illegally earned money or property, the govt. can take an undertaking from the person concerned. Only then he should be entitled for amnesty. The govt. may draw the demarcation line between the major and minor cases of corruption in terms of the money involved.
This will benefit both the govt. and the accused and will also act as a deterrent for others.