Don’t go on and on
Formatting block quotations isn’t hard. Reduce the point size and line spacing slightly. Indent the text block between half an inch and a full inch on the left side, and optionally the same on the right. As with first-line indents, make the side indents large enough to be noticed, but not so large that the line length is too short. Don’t put quotation marks at the ends. They’re redundant.
Block quotations are sometimes unavoidable. If a dispute involves the interpretation of an agreement, accuracy may demand extensive quoting.
But as a means of textual emphasis, block quotations sometimes become, like all caps