Often when working with co-workers it would be helpful to be able to provide a web url to them, vs. a UNC path that might be different on their machine. Additionally I often will post a url to a vm in a web app that I am using as third party access.
I propose that you change the current behavior and add 'UNCPath' or add an addtional option for a 'WebUrl'.
Command: Open-VMConsoleWindow -VM $vm -UrlOnly
This is a sample line I use to build up my own webUrl in powershell (Each version of vSphere is slightly different):
Let me know if I can provide more details.