Why even offer local harvesting if delegated is so much superior?
delegated harvesting is a blockchain based transaction and takes a fee. some people would be upset if they saw money coming out of their account to harvest. some have actually already been confused about this. but local harvesting is still really safe. if you are harvesting on your home computer local harvesting is just fine I think and no one time fee.
but some people are setting up remote nodes on VPNs with a lot of XEM in them, and those people will feel very happy knowing all their XEM is completely secure because their real account with their real XEM isn't loaded on that VPN but instead a delegated account that is borrowing the POI and sending all the fees earned back to the regular account.