Add also the HIERARCHICAL system in Registry 'Repair' module that show importance of deleting/fixing that keys. Allow also user to select all or only select appropriate keys [expert users]. Do that like in popular Anti-Malware programs, where you can

Add also the HIERARCHICAL system in Registry 'Repair' module that show importance of deleting/fixing that keys. Allow also user to select all or only select appropriate keys [expert users]. Do that like in popular Anti-Malware programs, where you can see flags like 'Extremely', 'Critical','Medium','Low priority','General','Hint'.