Yes, but don't tell it to anybody! This is the simplest and most convenient way to generate a progress bar in Blender. It also follows the color schemes when you change themes in Blender which is great. Of course it has the disadvantage that you are able to click on it and drag the value however this will not affect the render time, unfortunately. The add-on will refresh itself as soon as it starts to work on a new frame. So don't touch it!

The viewport render animation data is managed differently. It is separated from the normal render data in Blender so our add-on isn't able to use it unfortunately.

Of course you can! If you send your ideas to us and they are really useful or funny or even fancier than the default ones we will implement them to the next version. We will really appreciate it. Thanks in advance.

Well, we tested it so many times, fixed bugs, added new features, updated for new Blender versions, we can say it is pretty good and stable. However you may need something that can be added, or you encounter a nasty bug, in this case do not hestiate to contact us.