I really want to be able to pave with wood to dress up my village. Used on level places it could make a boardwalk. Used on very steep paces it would appear as a wooden embankment like the retaining walls people make out of railroad ties. Of course, it would decay faster than stone. It could also be laid in marshes but there it would decay in a matter of days and need constant repair. Cedar and Larch would last a little longer in marshes than any other woods, but they would all disappear completely if you weren't logged on for a month.
Add some southern European trees with some nerf coding, so that you can grow them, but they are harder to germinate and sometimes drop all their branches, or worse with two decay ticks, die on you for no perceptible reason. That's because they don't flourish in our northern Haven climate.