Tony -
I agree with you! You might be interested to look into the Global Investment Performance Standards [https://www.gipsstandards.org/Pages/index.aspx] (GIPS) that are created and administered by CFA Institute. "Uniform" and "agreed upon" amount to quite a challenge when taken together, especially globally, but my colleagues on that team do admirable work. You may be particularly interested to review their comments about the future of the standard [https://www.gipsstandards.org/standards/Documents/Guidance/gips_2020_co…].
Thanks for reading, and please keep sharing your thoughts!
Will