Those who want to make it simple must not have any clients whose income, credits and deductions involve several moving parts.  Does lower AGI increase EIC and CTC?  Does one spouse have UI while the other has partially-taxable Social Security?  

Maybe these maneuvers can be resolved with software using Artificial Intelligence.  I hear they are working on airplanes that fly themselves.  Maybe some day we can be just like them.  They're called drones.