My dream for Mastodon is for it to be a viable choice as a publishing platform for any creator. In other words, for people to not feel like they're locked in to Twitter or Instagram if they want to be professionally successful.
@Gargron I think collections *and* being able to follow collections are a must in that case. That way, one could create playlists/albums/folders that have just content for certain target audience and it would ease the way users follow creators and erases the need for different accounts in order to follow different mediums, and also the pressure on deciding if unfollowing someone because of their random ramblings despite their great art. Just my 2 cents.
@andycuccaro coming from #GooglePlus, this is something I am still missing well. (Featured) Hashtags are a step in the right direction, but so long that you can't follow or exclude those on a per-user-basis, it's still lacking.
@Gargron
@FiXato @Gargron Yeah, it's also something present through RSS in DeviantArt folders, tumblr pages and YouTube's playlists and it's very useful :)