The EA forum (and LessWrong) are both structured primarily as a newsfeed of posts sorted by date. This caters well to immediate engagement, but is much worse for building up a repository of knowledge which is accessible and relevant over a long time period. LessWrong 2.0 has (to some extent) managed to avoid this problem by having a) curated content, so that people don't have to look at literally everything which is posted, and b) sequences which store great posts in a format that makes them easily accessible a long time afterwards. The EA forum has neither. This makes it rather frustrating to try to use it to build on existing intellectual progress, as I recently found out while reviewing forum posts on career advice. Why don't we have any mechanisms for ensuring good content lasts, and what can be done about this? (Even just a blanket 'curate everything above x karma' strategy would help, while requiring very little moderator effort. EDIT: I actually no longer believe this last part, I think the key thing is collating material from across the internet.)
I remember from conversations with the EA Forum team that adding this is indeed planned, but because CEA is currently quite bottlenecked on developer-hours, they wanted to minimize the code-footprint of the EA Forum and adapt its functionality iteratively. I expect that these features will be ported over eventually, though I am not sure about the timelines on that.
I'm sorry if my framing was misleading: When this feature goes live on the Forum, other users will be able to use it freely. CEA still wants to have its own "collections" be as close to "definitive" as we can reasonably get, with occasional updates/added material.
Meanwhile, until the feature goes live, I'm considering ways to more reliably expose Forum visitors to collections of introductory material that already exist, like the material compiled on EA.org. Maybe a pinned post, or maybe a page that shows by default to non-logged-in users; that's still in the works.