Let's keep it simple.

I feel that it would be useful if we keep the way that we present our messages simple.

If we need to include what others have said in our messages, let's do it so explicitly that any reader can see who is saying what.

I feel that :colons are too illegible to the reader in this forum and maybe "quotes", (parenthesis) or would be easier to read and distinguish the person's ideas that we are responding to.

What do you think?