I will answer this here so it will hopefully add clarity to what we are attempting to do.
I agree with what you posted above. The point of the guidelines are that if you are going to make a statement that is to be identified as your understanding, then back up your statement with the scripture reference(s) that apply. For example, in the following post, you make some general statements counter to the OP. Where's the scripture to support you opposing viewpoint, understanding, or interpretation?
First off WIP, I really didn't expect you to respond to this. I feel that the only reason you have, is because you believe in what you are wanting to accomplish with the guidelines and you are a thoughtful person. I assure you that I respect that. I understand that you would like some scripture provided to support any belief. That may be extra work, but it is a reasonable request if in fact those beliefs were inspired by scripture. But the point of my post 21 was to say that this is not always possible. Why? Because I see the semantics in words which makes the task you ask problematic. I can't help that.
Take this post of mine that you provided as an example:
Seems to me there is a misunderstanding of what scripture means by faith through grace. Grace is not letting people get away with sin, as it seems is being implied in the op. Faith is not believing in Jesus as the Christ, and then sinning without any concern for how you are hurting others by doing so. Grace means by God's benevolence and forbearance. Faith means to trust in His Character. The opposite of grace is by your own self determination of will, as in you earned it. The opposite of faith is distrust or cynicism, skepticism. Hence no one is saved without God's grace which is seen in the Christ that was sent, and by faith in the Christ as the True Character of God.
The first line of this post is addressing the presence of semantics in words. There is no scripture that would support this fact. It is just inherent in all languages. I then say what grace is not and what faith is not for the purpose of pointing out that the op seems to be implying that they are those things. Of course scripture doesn't apply to this matter since I may or may not be wrong about what the author of the thread is meaning to imply with the terms. Finally I say what I think grace and faith mean to me, which is my personal interpretation of what are behind the authors of scriptures sentiments when they uses the terms.
Scripture does say that faith is the evidence of things hoped for and not yet seen, Hebrews 11:1. But if I hope I can fornicate with many women and be forgiven is this faith? Semantics, go figure.
So when Christ says to believe in him, I take it to mean he is speaking about trusting in him. There is no scripture to support that, but it is my heartfelt understanding of what he means when he says it.
Then there is grace. Scripture never identifies what grace means that I am aware of. Many will say it means unmerited favor, but yet scripture will say God gives grace to the humble implying that the humble merit his grace. Semantics, go figure.
But if your willing, I am open for suggestions on what scriptures I could have used to make my points of what the words mean according to my interpretation and I will stand corrected. Apart from that, I am always going to try do my best to comply with all the guidelines.