In the QtCreator main UI, in the bottom left, are the Run, Debug and Build Buttons.

Often when I hit build, I really mean Run or Debug. It would be very cool if:
1. The current operation was indicated (current behavior is to grey them all out and active the the red square ("stop") under the buil/run mini window)

2. If building, be able to queue the Run/Debug operation.

Example:
I press build, a busy indicator is shown over the build button. Run/Debug remain enabled.
Two next possible paths:
1. Build finishes (irrespective of build status), busy indicator is removed.
or
2. While building, I hit Run, and the run button gets a busy indicator too. When the build finishes, the build indicator is removed and the Run busy indicator remains until the process is deployed. Note that for some systems (namely Android, iOS) there is a significant time between the build finishing and the process being started (I call this "deploy" time).

Also note that I think there is some overlap in the Android/iOS build and deploy, it would be cool if that overlap could be removed in the queued case.