should GMAT be mandatory for persuaing MBA by experienced people

We have categorized students with work experience into four segments:

• Switchers: This group is interested in changing their career track altogether. They want to try out something new. More often than not, they have not decided upon which functional stream they will finally select and wait until they have dipped into all the subjects to make their choice. In addition, they are willing to cast aside their experience and join as freshers.
• Climbers: Climbers are those who wish to obtain a management degree so that they can go back to the industry in which they were working. What they expect is a direct climb of two or three rungs in the hierarchical ladder when they return. An example would be that of a programmer who wants to be a Project Manager.
• Jumpers: Jumpers are an interesting lot. They look forward to jumping across streams within the same industry. A typical example would be that of a technical lead who wants to join the Marketing/Strategy/Business Development team. The Jumpers often foresee the possibility of hitting the glass ceiling in the absence of a formal management degree and pursue their MBA to fill the gap.
• Multipliers: The Multipliers join the course primarily in anticipation of future monetary benefits. This group expects their compensation to be a multiple of what they were earning before. Just like Switchers, they too are not initially clear about what function they would finally select.

As there are many experienced person whom want to complete their education for sustain in top level postions but having good skills and already perfoming well in organisation and being on highly responsible level job can not pay time for preparation of GMAT,as good foreign university have mandatory to take GMAT but failed to pay time for prepration should be waive out for GMAT exams score on the basis of interview and intelectual skill tests.