Upgrading from 17.X to 18: Since one can always reformat the disk and install a fresh copy of Mint if things get screwed up, why not provide an upgrade path WITHOUT a fresh install? The last 10 upgrades I did this way in (L)Ubuntu went without a hitch, and it would be nice to have that option to those who do not want to (or cannot) back up their voluminous data, which is required for a fresh install.