Support web.config transforms for development scenarios
Today web.config transforms are only applied during publish time. If you have web.release.config defined it will only transform web.config when your Web project is packaged/published.
It would be good to have a built in mechanism to transform web.config (and possibly other files) during development. For instance if you are building in Release mode and you start a debugging session you should be able to transform web.config in a similar (or exact) fashion as web.release.config is used during publish/package.
Peter Wone commented
This is a great idea and as far as I can see requires very little. At the moment IISExpress is launched to serve the project folder. Instead, Release/Debug/other-build-name folders should be created according to the active build profile, and the project published to that folder, same as every other project type since the dawn of time, then IISExpress launched to serve that folder. The transform output won't clobber the original web.config and everything is sweetness and light.