You mean besides the general cautions against importing/copying other people's work because it may be inaccurate / out of date, have an incompatible license, or clash with what is already mapped ... 

This case it might be fine. It's just that I only map what I surveyed or verified. Lincoln Brick Park has been on my to-do list for a very long time. Before I could map it I had to walk its trails again to capture and upload GPS traces to OpenStreetMap. Maybe even capture Mapillary imagery. 

When I map, I am always thinking of things like the families who will use my edits to walk a new trail or the person trying to route their wheelchair across town, or the self-driving car depending on the accuracy of my edits. In all these cases it is better that the data is accurate than every area is filled in with something.