Unlocking the window would be a great option!
If it remembers the position as well, then that’s good enough for me.
With that said, I think there are two good arguments to position the window at the left bottom:
1. better balance with other windows, since there is just an empty space and left top is often more crowded with mod icons
2. left bottom is the natural place to have information about your character. The BP editor and Satellite View “replaces” the character and therefore their UI would fit very well