(1) linking to ideas in original posts without summarizing the main ideas in your own words and how they apply to the specific context -- as this creates short-cuts in the brain of the reader, if not in the writer

I plan to keep doing this; it saves time.

(2) Use of analogies without formally defining the ideas behind them leads to content not only saying more than it intends to (or more than it strictly should) but also having meta-meanings that are attractive but dangerous because they're not explicit. [edit: "formally" was a poor choice of words, "clearly" is my intended meaning]

Isn't this inherent in using analogies? Are you really saying "Don't use analogies"?