There is a finite level of "quality " an appraisal is ever to achieve. It is what it is. The quality of the people doing appraisers, can vary tremendously, and much of that I blame on lowering the bar for entry as well as not having mandated reviews of work to ferret out the truly bad appraisers, as well as the greed system which sees clients tolerate sub standard work. I don't think an appraisal has to be perfect, or biblical length , but it should show reasoning, logic, good comp selection, narrative. Clients will not $3000 for an SRA demo level report . On the other hand the super tight turn times can affect adversely the work even for an experienced appraiser, the norm of 48 hours after inspection in much of residential end is impairing quality.
In the same vein, technology also hits a wall in the level of "quality" it can achieve, though quality is the wrong word it should be credibility and reliability, It has different limitations. If technology was the solution, human problems would have been solved by now, but since technology creates its own set of problems and potential for abuse, that is far from the case.