Perhaps your idea was true many years ago. However, nowadays "the pickings are getting slim", and a male will be appointed as a MS (& later an elder) if he meets the following (listed in order of importance):
1) He averages 10+ hours of service per month (completely irrelevant if he ever actually witnesses to anyone, or is an effective teacher-- the single important point is the number on his publisher card under the "hours" column)
2) His family is not an embarrassment. In particular, his children can't be "trouble-makers" and must be at least unbaptized regular publishers if over age 10, and his wife must get close to 10 hours per month (same point as above--preaching effectiveness is utterly irrelevant, just get the numbers). Bonus points if one or more family members are pioneering.
3) He sounds as if he had more than a 4th grade education when giving talks.
4) He is "visible" in the congregation. I.e., does he show up for field service arrangements (completely irrelevant if he actually does any service thereafter), does he comment at meetings (completely irrelevant if his answers have any substance whatsoever), does he show up to clean the Kingdom Hall.
5) He is generally viewed as a pretty decent person by most people. No obvious repulsive personal habits.
6) If there is time at the end of the elders meeting discussing who is "reaching out", a cursory, superficial consideration of the scriptural qualifications at 1 Timothy 3 & Titus 1 is done. Discussion not to last more than 5 minutes.
Here are some qualities completely irrelevant for being nominated as an elder (in fact these may be a hindrance). I have never ever heard any of these items being discussed in a "who is reaching out" discussion:
Generosity, kindness, empathy, mercy, intelligence, compassion, patience, reasonableness....you get the idea.