You'll be hard-pressed to find any wikipedia article that looks bad with it, unless you zoom in to something like 6 words per line on average.
Edit to your edit: I don't particularly care for your appeal to authority when experience has borne out for me that wildly varying line lenghts hinder reading considerably more than occasional gaps. Besides, your authority doesn't even mention justification or alignment, as such i question your binding his statement to that matter.
Your claims would hold more weight if you actually demonstrated them. Also it would be nice if you actually marked your copious edits into your post as edits.
Edit to your edit: I don't particularly care for your appeal to authority when experience has borne out for me that wildly varying line lenghts hinder reading considerably more than occasional gaps. Besides, your authority doesn't even mention justification or alignment, as such i question your binding his statement to that matter.