Hi John:
It is looking good -- I am still studying it, however in the following I have a comment and please forgive me if you find it to be trivial.
In the graphical equation, the vertical alignment of the = sign is fine for single row equation (where there is no divisor line separating the numerator and denominator), but for graphical equations that take up two rows (for lack of a better description), the = sign is not center aligned vertically.
So, can the = sign be center aligned vertically? and if it can not be done easily, here is a suggestion for a possible solution ... drop the = sign from the graphical representation of the equation.
