I use the draw line function in the strategy layer also, but it would certainly be nice if "fat cross" were a drawing option to save some trouble. BTW, what does the "view" option do? I would think it would toggle the lines on/off, but it doesn't seem to. Would also be nice to save your strategy layer lines with the game - that wouldn't appear to be too much work. Or to be able to keep the resource flags on while your drawing.
I really like the whole strategy layer idea, but it seems like it could be implemented so much better than it is.