Wanted: Tips / Best Practices for Case Study Assumptions

In the spirit of people prepping for recruiting / laterals - doe anyone have any tips / best practices for when making model assumptions in a case study? For clarity, I'm particularly referring to the 24+ hour case studies that actually provide enough time for thoughtful analysis, as opposed to the 1-3 hour speed model tests. 

For example, if the revenue build is not broken out, would the best practice be to grow revenues at the projected industry CAGR?

Another example would be, if capex requirements are not provided, would the best practice be to assume D&A = Capex on a go-forward?

Interested in hearing any tips / tricks / best practices from all! 

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