I like this true and simple video by the organization Pioneers that shows that there is no one type of missionary out there. I think one of the many things that keeps people away from missions is because they fear having to give up the gifts and talents that they love. This may be true in some cases, but I have also found that often God has given you talents and gifted you in a certain way so that you can use them as a platform for missions.
In order to see the unreached peoples of the world reached it is going to take innovation and flexibility by individuals, by churches, and by mission organizations. There can no longer be this mentality of doing it one way, but rather there must be a joint effort by the people of God being on the mission of God.