Threads get 'bumped off the bottom' after 24 hours. You could set the filter to a longer time period and click 'Refresh', but then there'd be even more to read through.

Requests, lyrics, chords, whatever: you can type 'req:' in the filter and click Refresh, or 'add:'.

As to further organization... it's perfectly valid to request something you'd like. It's equally valid for people to disagree if the situation is an either/or one, and a change is being proposed which you WON'T like. There are almost always other options.

Pene Azul has repeatedly demonstrated his aptitude for is thinking around corners and creating choices. I can't personally think of anything that would work consistently. More prefixes and sorting alphabetically? Prefixes are currently used inconsistently and thread titles are often vague or misleading. One would have to set up prefixes and then get people to start threads uniformly. Maybe, in some universe...