Dantas I like the look of yours as well, but I think it looks good now because you have a small amount of objects where you may not need a tree anyway. If you have an scene with 80 different components it is then the same size as what I had. I do like that it looks simple and in keeping with tht UI overall but when it pops up it will be in the middle of the workspace I think instead of off to the side so it may obstruct viewing.