It would be useful to have a map showing the closure extents and diversion route including on the PDF notices that are created in the TM Module. This notice can then be printed and shared, or emailed as a single document, could even be used as in a letter drop.
If I'm reading what you're suggesting, you can already do this? When creating a document attached to your TM plan click, "Insert map". Once you've drawn your TM plan on one.network, you'll then be able to capture your TM plan as displayed on one.network to include in your documents. :)