> hours of planning can save weeks of engineering.

This is so hard to get teams to do. I am almost always the slowest to implement a change simply because I don't conflate design and implementation.

At first glance it looks like I get less done, but when you account for the fact that nobody has to clean up after me or shoehorn a work around for an edge case in I become one of the most efficient.

Assigning cost to subsequent follow up tasks is difficult as well. Both technically in terms of aggregating/grouping as well as interpersonally because people get defensive or discouraged when you're consistently pointing out shoddy work.