Sup Jon316, You've been asking a lot of questions lately that the RCC gets Protestants to ask in hopes that they'll see Protestants don't have good answers to the questions and join themselves to the 'Church'--the problem is that these issues are SO complex that most Prots don't have solid answers these questions. The RCC just has awesome think tanks with answers that are already prepared, while Protestants don't seem to have any great collaborative efforts like that anymore(they might, but I haven't seen any responses to the RCC claims on the ECF that would be classified as 'scholarly'--just some good forum posts from some members on here).
That last thread on the ECF died out way too prematurely--you probably know that the academic community who studies that period of history classifies a lot of Christian thought as pre-Augustinian and post-Augustinian and that before Augustine pretty much everyone was a heretic by standards later agreed upon in Christendom: but you took the answers in that thread(Calvin said they weren't heretics and the REformers said they weren't heretics). That's going to give you some serious intellectual 'tensions', like unresolved questions that get pushed back in your mind and then stacked on top of each other until you finally have a belief that Protestantism exists because they don't ask the qeustions that the RCC apologists ask. If not, those unresolved questions(for which there are answers to) cause people to latch onto the poor answers the RCC and think those are the only answers that are out there--so brother I hope you're not considering the plunge and that you're just thinking through some of these issues in a leisurely fashion knowing that after 500 years and having produced thinkers of the greatest caliber in the world, there are good Protestant answers that the Catholic apologists don't want you to know.
I'll come back later and give my take on this topic + the topic in the other thread. I've just finished a pretty intense reading project of Oxford University Press books on the early church that raised a lot of the questions that you asked in the other thread--and had some indirect information that caused me to see some things in the Scriptures that could answer this post. About to put in a work day though--sorry for sounding paranoid but sometimes the smartest and most pleasant end up going over to Rome 'in the night'.
You have valid questions in both threads, if my answers are shoddy then maybe we could just do an intense brain storming session and try to each go through books that are related to this or whatever. There's definitely going to be answers out there that can take into account a heretical early church(by today's standards) and all of the other facts that the RCC bring up to disprove Protestantism.
If you're not concerning Rome, disregard my entire post.