I believe that it is probably a good thing to have women bishops. And I think such a position is scriptural.
From NT Wright (I add emphasis)
So what is the real argument? The other lie to nail is that people who “believe in the Bible” or who “take it literally” will oppose women’s ordination. Rubbish. Yes, I Timothy ii is usually taken as refusing to allow women to teach men. But serious scholars disagree on the actual meaning, as the key Greek words occur nowhere else. That, in any case, is not where to start.
All Christian ministry begins with the announcement that Jesus has been raised from the dead. And Jesus entrusted that task, first of all, not to Peter, James, or John, but to Mary Magdalene. Part of the point of the new creation launched at Easter was the transformation of roles and vocations: from Jews-only to worldwide, from monoglot to multilingual (think of Pentecost), and from male-only leadership to male and female together.
Within a few decades, Paul was sending greetings to friends including an “apostle” called Junia (Romans xvi, 7). He entrusted that letter to a “deacon” called Phoebe whose work was taking her to Rome. The letter-bearer would normally be the one to read it out to the recipients and explain its contents. The first expositor of Paul’s greatest letter was an ordained travelling businesswoman.
The resurrection of Jesus is the only Christian guide to the question of where history is going. Unlike the ambiguous “progress” of the Enlightenment, it is full of promise — especially the promise of transformed gender roles.
The promise of new creation, symbolised by the role of Mary Magdalene in the Easter stories, is the reality.
I politely suggest that as long as we fail to scripture as the story of an evolving, transformative project of redemption, we will continue to fall into the trap of imagining that the Bible is a collection of timeless truths. Its not that simple, even though many stumble over this issue, making errors like the following:
1. Believing the Law of Moses is still in force;
2. Believing that ethnic Israel is still somehow a "special" people, set apart unto God;
3. Believing that since God countenanced war in the Old Testament, its acceptable for us to do likewise now.