A suggestion for QtCreator 4.8:

It would be great if i could select the executable for debug and release independently. Or make it at least an option.

Reason: Im writing a Plugin based Software, and in windows you cant mix release and debug, so if i want to start the Software from my Plugin Project, then i have to select the executable. For debug i have to select the debug executable and for release the release version. Unfortunately currently, when i switch the kit from release to debug, i always have to change the name of my executable from RandomProgramName.exe to RandomProgramName_d.exe

The "Run Environment" variables works as in my suggestion, having a separation between debug and release