Just Asking: "Is it biblically wise for church mission committee to discriminate?"

It seems the current craze for church mission committees is to emphasize one area or people of the world over that of another. Is this not a form of discrimination? Perhaps the church leadership and missions committee have a burden for the Middle East or for tribes, etc., but it is not biblical to neglect other parts of the world and other people groups in its mission policy. This is very discouraging for the church as a whole and degrades the mission mandate of the gospel to the world. If your church, for example, decides to only send missionaries to closed countries, then this seriously and unnecessarily discourages someone in the church who has been praying and preparing for years to work with older street children in Toronto or younger in Manila, neither which are closed countries. It is not either-or, it is both-and. The gospel to Jerusalem, Judah, Samaria, and all people of the whole world!