Do Protestants believe that "Our Father" is on par with "Our Mother," or is Jesus strictly invoking a male symbol only? According to some people calling God 'Father', without adding that God is also Mother, unfairly exalts one image for God above all others and ignores the culturally conditioned nature of all our images of God, but Ratzinger said:


  Christianity is not a philosophical speculation; it is not a construction of our mind. Christianity is not 'our' work; it is a Revelation; it is a message that has been consigned to us, and we have no right to reconstruct it as we like or choose. Consequently, we are not authorized to change the Our Father into an Our Mother: the symbolism employed by Jesus is irreversible; it is based on the same Man-God relationship he came to reveal to us.


My question is: Do Protestant churches have the same or a different perspective on this matter?
While I cannot and would not be so bold as to try to answer your question as it asks about a generalization of protestant belief, I wish to point out that Jesus in the LORD's prayer; as translated in the King James version, used the original word:

πατήρ pater (pat-ayr') n.
1. a "father"
{literally or figuratively, near or more remote}
[apparently a primary word]
KJV: father, parent 

which can be translated as the genderless word "parent" as opposed to the word:

Ἀββᾶ Abba (ab-bah`) n/p.
1. (vocatively) father
{referring to or addressing one's father}
[of Chaldee origin (H2)]
KJV: Abba 

Which is a definitive reference to the male parent.