Great post! Steemit is not a timeless post platform however. The idea is certainly timely posts. The extended 4 week duration is more about re-discovering lost posts to be consumed over a short time once re-discovered.

The great thing is the Steem blockchain is open and freely accessible. Someone else can run a website which is more about long term content, which displays content differently. I vaguely recall someone mentioning they have something in the works for just that.

The whole idea behind Steem is a completely open and free platform which works itself out. Many of your ideas require a centralized body that controls and vets content. The good news is a lot of curators are really taken notice. My favorite initiative is Hive account@smooth, who has even hired a team of curators! It's exciting to see the open platform working without any centralized bias or control.