No of verbal exams should be increased and I think, CR part is bit different from pattern of CR in official questions.Quality of CR questions should be improved.
I think that questions in SC are not in line with all questions in SC OG. More no of SC questions comparable to SC OG should be made.I have found that scoring pattern also doesnot match GMAT PREP scoring pattern. More emphasis on exact replication of GMAT PREP should be put.
Quant section can easily make aspirant achieve V48-49 but I never got V-50 despite solving all quant exams.Tricks to achieve V-50 should be included in the solutions of questions so that the aspirant could not easily make such misktakes.