This is by no means a groundless hope. Most priests were altar boys when they were young. And I know from personal experience how good it was for my vocation to have frequent, positive interaction with priests, at an early age as an altar boy. The tradition of altar boys was also a good thing for boys. Let me tell you something else about the differences between boys and girls.
Girls tend to be more religious.
They step forward more readily to serve the Church. Just look at the ministries in you own parish. In the children's choir at St. Rita's, girls far outnumber boys. It's just that girls more naturally show an interest participating in Church activities. I'll give you another example.