This wouldn't change the need to scroll or click, since the front page, AND "Main", show only promoted articles, and promotion appears to be based on either being written by a MIRI staffer, or being some sort of general notice about an event or job opportunity, rather than having to do with quality of content.

(I don't even know what the difference is between "promoted" and "featured", or why we have both categories.)

I think a better improvement would be to automatically insert a summary break after the first paragraph for all posts that have no summary breaks, and/or to have a forum index that listed just the post titles. MIRI staff are especially guilty of posting huge articles with no summary breaks.

A more ambitious change would be to choose admins from the active forum participants to promote things to main. I get the impression that the LW admins don't participate much on LW. I haven't been around much myself lately, so I say that with low confidence.