FFS should automatically create destination folder, if it does not exist.
Well, actually it does create the destination folder automatically upon sync, but this should be a bit more intuitive and transparent.
Right now, when clicking "compare" a message pops up that states that the destination folder does not exist. But it only offers "repeat", "ignore" and "cancel" (don't know exact labels of the English version).
There should be an extra "create" button or "ignore" should be renamed to "create", which could be a more helpful/obvious option in this dialog.
The actual dialog is a bit confusing on that, though it actual creates the missing destination folder upon sync when hitting "ignore". But the user does not expect this to happen at this point.