You can add a blank space by right clicking the toolbar and selecting "Customize Toolbar...". From there you can add blank spaces to your layout! You can also remove the arrow by dragging it away from the toolbar on the same page.
I do like the idea of Firefox VIew. One thing that is bothering me though is that its icon doesn't follow the general minimalist and colorless theme of all the other ones. This is a reason for me to not use it since I think it does not fit the curren...