Thank you for your inputs!
I'm familiar with much of the heat Lutherans and Roman Catholics get in both directions - and I think it's safe to say that, whilst there are some pretty significant theological differences, there have also been malicious exaggerations in both camps. Luther certainly was a passionate man with some pretty hard statements, but I think it's important to realize that much of the doctrines we (orthodox) hold to now were formulated and settled after Luther, namely as put together in the Book of Concords. Needless to say, the Book of Concords is not a replacement for the Bible, and Luther is not our eternal pope.
I will say this though - I don't think this idea of Luther putting his scissors to the Bible to suit his personal theology or bitter agenda is accurate. It's more a case that we don't put too much stock in any writings that has an obscure or uncertain origin. We are skeptic to any writings that challenges the apostles' writings. I don't see that as rejecting scripture, but more as safeguarding and containing the pure and original teachings of those closest to our Lord. We can trust these words and we know they are God-breathed.
However, it should be noted that most classical Lutheran theologians hold the church fathers in high esteem and use their writings pretty freely. Personally, I no problem learning from the early writings - I think there are great values that can be found in it. (Especially learning about heresies!) - though, of course, I view things in a particular Lutheran Orthodox way. That is to say, I'm critical to things like purgatory and the immaculate conception. Though as you point out, ironically, Luther somewhat held to - but you know - he was a good Augustinian Catholic
Anyway, I hear where you're coming from and I fundamentally believe in one holy church. As such, I think you're quite right that we ought to be living out our duties in the world by bearing good fruit and doing good in unity with one another.