Ira, Igor Khmelnitsky's "Chess exam and training guide" gives you exactly what you're asking for. It pointed out that my positional understanding was at expert level but my tactics were class D. After a focused training in that area of weakness my rating went up some 300 points.
Full disclosure: I won't receive a dime should you buy the book, nor will any of my friends or family.
Maybe from apractical point of view that would not work but would be helpfil for the individual.