Background removal tool improvements

Hello

I often find it very frustrating that the background removal tool (which is very nice to have) only have a "magic" feature. Often it doesn't select exactly what I need, and the only possibility to keep areas are with the "magic" selector. You have to select the same area multiple times hoping that it selects the area to keep that was intended. Sometimes removing a part on the other side of the image (which you just have used multiple times getting to keep). The magic feature is great, and gets the job done 80%. 

I wish there also were a "hard" keep area or remove area button, which doesn't initialize the "magic" selecting. This way we can easily select exact parts that needs to be kept/removed. If the "magic" selection is need, this button should still exists.

Thanks