I think that their focus has been on the experience for advertisers, which are less visible or feel negative to the end user (such as tweaks to the timeline—100

I think that their focus has been on the experience for advertisers, which are less visible or feel negative to the end user (such as tweaks to the timeline—100% for advertisers and brands). However, those choices are probably highly influential to their revenue, and arguably they need to be working more on those things—which means even fewer visible changes that benefit end users. Either they're working on the wrong thing, or they're not working hard enough on the right thing. I don't see too much of a split focus—they know the base they have and they need to extract value while keeping the essence of the experience they have.