[Note: in the light of comments I have received, I've edited one of the paragraphs to express more accurately and fairly what I was trying to say. So, some of the comments made before I edited may not make sense.]
There has been a statement circulating for several weeks now entitled, "Presbyterians and Presbyterians Together," which now has several signatures and which you can read here. There has also been at least one fairly frustrated response to this paper on the Ref21 blog, which you can read here.
I must say that I tend to agree with the substance of the response on the Ref21 blog--it does strike me that, for the peace, purity, and unity of the church, these issues should be settled in the courts of the church. After all, the resurrected Christ has granted his church authority to declare its doctrine. In the PCA, we have done that by claiming the Westminster Standards as our confession of faith and then by requiring our ministers and elders to subscribe to those standards in good faith. In addition, we require men to owe up to where they differ from the Standards and presbyteries are required to rule on whether those "scruples" strike at the essentials of the system of doctrine contained in the Standards. And, when we have challenges to our understanding of those Standards, as a church we have shown ourselves willing to examine those issues by way of a study committee and deliver the church's wisdom on those matters.
While this document doesn't appear to conflict with the idea that doctrinal issues should be dealt with in the courts of the church, it does feel as though there is an attempt to influence that future discussion through the invocation of a call to "charity." In times past, such appeals were very influential (note, for example, the 1923-4 Auburn Affirmation in the PCUSA). However, such extra-ecclesiastical appeals aren't the best or "Presbyterian" way of dealing with doctrinal issues--that way is to hear the voice of the whole church, guided by Word and Spirit, speaking to these issues.
At the same time, we must recognize that the issues at stake are important. Some of the issues under discussion concerning the nature of the covenant, election, justification, union with Christ, the nature of the church, and the sacraments. That is a pretty comprehensive list of "essential" doctrines and helps to explain why so many people are so worked up over these matters. There are two different "visions" (at least) at stake in these matters; we shouldn't pretend that the differences, at times, aren't substantial. And while I believe that the Missouri Presbytery committee report did a good job dealing with these matters, and should be received by the General Assembly as a definitive word on these issues, I also believe that it is the privilege of the church in its collective voice at the General Assembly to call for a committee to study these matters.
At the end of the day, what we really need are people who are committed to Presbyterianism--which means working issues through the church courts and its processes and expressing a deep commitment to remaining together in visible unity as we wrestle with difficult theological issues. Too many people these days jump ship to other churches, rather than listening to and heeding the church's voice (which they had promised to do in their ordination or membership vows). Only by honoring our own rhetoric about the centrality of the church in God's purposes will we truly be those who are Presbyterians together.