Ecclesiology
The pastors described in Isaiah 56 seek their own good at the expense of the sheep, they do not possess the knowledge needed to guide the sheep, and they do not do the hard work of warning and protecting the sheep.
The practice of Rome and the Orthodox requiring some or all clergy to be celibate goes well beyond the teaching of the Bible.
Is the pastor a third office in addition to elder and deacon? Or is the pastor an elder who has the special task of teaching and preaching in addition to ruling?
other articles
“The Spirit of Charles Hodge: A Review of Empowered Witness: Politics, Culture, and the Spiritual Mission of the Church by Alan Strange” (American Reformer) by Zachary Garris
“Membership Vows & the Third Commandment” (Presbyterian Polity) by Zachary Garris
“An Honest Confessionalism: Taking Ordination Vows Seriously” (Presbyterian Polity) by Zachary Garris
Instead of v. 11 speaking of female deacons, the alternative explanation is that Paul has lesser requirements for women because they do not actually hold office.