Thank you for the post above. I am a financial modeller myself and could not agree more to your checklist above. All these points are really helpful in achieving an easy to understand and error free model.

However, I am not really a huge fan of “Iterations” option. From my experience, keeping iterations on means living with a circularity in the model. And I can never trust the outputs of a circular model.

Instead, I would suggest having a circularity-break, may be a simple copy-paste module with a check to make sure that the model is fully optimised. (the calculated value is equal to the paste value flowing in rest of the model).