So long as it did not violate fellowship considerations, I personally would not oppose or be offended if the family requested an ordained member of the family conduct the funeral or participate in the funeral. If we are not in fellowship with the church body that the ordained family member is ordained in, then I would suggest that they could do readings, or offer comments, but not preach. Also, when the extended family had close ties to a neighboring LCMS church I have invited that pastor to participate in the funeral, although I still conducted it. As much as is reasonable and possible, without violating long standing policy, I try to accommodate family wishes.
That said, I was very glad to let my mother's pastor conduct here funeral and preach for it. I did not want to do more than be a pall bearer and be family at the funeral. Others, no doubt, feel differently.