I'm not that old (this last St. Francis' Day was my 45th birthday), but I remember the controversies when women entered various "male" professions. I remember it was controversial for women to wear slacks. In my profession, academia, there are many women, many of whom are outstanding scientists and professors. Christians should be very conservative (slow to change) on matters of theology or discipline, but I believe in this instance, change is a good thing.
The real battle in the Church, the one we should be most concerned with, is over the reality of the Resurrection and the divinity of Jesus Christ. I was attending an Episcopal parish some months ago, having returned to my Christian faith after years of doubt or agnosticism, but I was dismayed when the rector (a woman, by the way) brought in the infamous Bishop Spong for a lecture series. Good grief! I've now found my way to a parish that is by some odd coincidence the most conservative parish and the largest parish in the diocese. (And by the way, the assistant pastor is a woman. Not the best preacher, but she's orthodox and caring.)
In order to ordain a woman to the priesthood in a liturgical church such as ECUSA or the Catholics (as opposed to a primarily scriptural/preaching church such as the Baptists), you have to ignore not only the Biblical authority and the cultural prohibitions (and that's the sort of pantsuits/professions type of argument) but also the long-standing tradition and authority of the church. In the Eucharist, the priest is alter Christus, standing in the place of Christ as the Bridegroom of the Church.
In order to place a woman in this position, modern ideas regarding equality and progress etc. MUST prevail over tradition and authority. Once you allow that, you have just set the precedent that cultural, modern, politically correct theories of a woman's role have primacy over the teaching authority of the Church.
That opens the door for other modern theories to trump the tradition and authority - changes in the Bible and prayer book (because, after all, what is up to date and modern is more important than tradition or Scripture - even if you wind up denying the Resurrection or the Divinity of Christ), ordination of active homosexuals (because, after all, the modern ideas of equality of treatment for sexual preference are more important than tradition or Scripture), support of liberal political candidates (because, after all, social justice is more important than tradition or Scripture.)
And that is exactly what has happened in the ECUSA. Once you allow the popular political groupthink of the moment to veto church tradition, all bets are off.