I recognize that these men who translated so well made some exegetical errors, but they were still outstanding practioners of good translation science. So we need both on every translation team, good exegetes, as well as good translators. I know that one answer is good training and there are good training programs available. I know that another answer is mastering of the manuals. Doctors would never be able to be certified to practice medicine if they did not master the medical manuals and the contents of their classes.
Lawyers have to prove that they have mastered law by passing bar exams.
Yet we do not have similar requirements for people who translate the most important book in the world, God's Word. I think we often assume that just because someone has seriously studied the original languages and taken courses in exegesis and hermeneutics that one can then translate, especially if it is into that person's mother tongue. But field testing on many English versions indicates that this assumption is not well grounded. It is the English Bible versions which had committee members who were well trained in translation theory and practice that give pass the field tests. I really hope this message does not come across as one-sided or negative.