Hi,
I would love to see the ability to set the lines that are removed with the fillet tool to construction rather than deleting them. The fillet tool works quick, and therefore is a good tool, but it often messes up the constraints and dimensions. I would suggest an "Erase to construction" checkbox in the Sketch Palette when using the fillet tool, or even give the option to not erase the lines at all.
I do understand the concept of the 2 tangent circle for this purpose, but it does not work as quick as the fillet tool when you have to do many fillets, because you have to define dimension for each fillet, and remove part of the circle.
