So compared to when most things were either posted or crossposted to LW, it seems like we currently spend too little attention on aggregating and unifying content spread across many different places. If most of the action is happening offsite, and all that needs to be done is link to it, Reddit seems like the clear low-cost winner. Or perhaps it makes sense to try to do something like an online magazine, with an actual editor. (See Viliam's discussion of the censor role in an online community.) I note that FLI is hiring a news website editor (but they're likely more x-risk focused than I'm imagining).

It should be not extrodinarily hard to re-enable the ability to submit links which this sites software came with (aka make https://www.reddit.com/submit?selftext=false and https://www.reddit.com/submit?selftext=true both work), and run a bot which scrapes from a list of blogs/tumblers/etc to auto-submits those links (could make the list drawn from the XML export of a wiki page, protected so only wiki admins can edit, with a request thread requiring x current recognized people to vouch for you before you're added, or having someone/a small team designated to handle those requests).

Then put top rated posts on the front page with reasonable turnover/ability to see past ones and LW becomes again the best place to rapidly check for new content across the wider rationality community.