In order to put dots on the right place zoom is an ideal tool, nevertheless I found 200x to be sometimes too low, while 400x is often too much. I feel the lack of half a way enlargement, i.e. 300x. As ancient Romans were used to say: "in medium stat virtus".
Another very useful feature especially using full screen should be the possibility to scroll images with the mouse. Using the right slider - if you don't move carefully the mouse, can cause the opening of the Office bar if this option is on.
P.S. Ark, when you have enough of my suggestions, let me know and I'll give up. Morpheus, as it is, is a very good piece of software, but, why don't make it perfect?