Comment 5 for bug 584687

My suggestions and user cases:
1). Pause installation. Sometimes the network is slow so i could pause installation and resume the task later.
2).Cancel an ongoing installation and roll back. I can cancel a slow installation process without breaking anything.
3). Parallel downloading. Download multiple apps simultaneously and automatically assign a higher priority to the fastest one. This can help to save lots of time for me and ease my pain for endlessly waiting.
4).Show real-time downloading speed and percentage of task completion.
Thanks.