Awesome post @bondor
Your idea and thought process is spot on!
I made a post a few days ago titled "Down-N-Dirty vs. Worth the Read" with a different context than what you have put forth here.
I wrote more towards the possibly of how to distinguish and separate the two.. aka "Timely vs. Timeless" using your words.
Steem needs to find a solution for how to handle this, without complicating the interface, is a tough, needed challenge. We need to continue bringing ideas and solutions to the table.
Another reason to strengthen the "Timless" argument for Steem is that the Steem block chain has, and always will continue recording every single word we post.
Day in, Day out, until this chain fizzles and dies. Obviously we're expecting Steem to survive the long haul, so that said we're running the Worlds first decentralized archive!!! An archive of information, thoughts, ideas and what ever else we can tame this beast too do.
If we start viewing Steem within this context, then hell YES we need to find ways to incentivize and accommodate those who want to add "Timeless" content onto Steem.

Again... AWESOME Post!!!!!!
Loved reading it!!