@Natasha_Jay If I remember correctly, Kassel Uni (or was it Hohenheim?) did the same with a new block: wait for the desire lines to appear before completing the external groundwork and paving. It takes guts and is not easy to pull off in terms of the bill of quantities and tendering.
I recently put a triangular deadwood habitat structure into a plan where a desire line is waiting to happen because of the way the paths were laid out (not our doing). #landscapearchitecture