Once the information is stored on the global database, you don’t need to scan the files again and again, the antivirus program would automatically retrieve information from Whitelist database. You can be sure about your files before installing or taking the risk of running them.
If you are a developer, then you may want to submit your apps to Kaspersky Whitelist, so that your users can assure themselves about the security of your application and it would also give you the program usage data.
Does this alleviate the need for signatures?
Does this stop 0-day exploits quicker?