One thing that I think would be incredibly useful would be trackable tags. Not just tags that aid in searching, but tags that users can explicitly subscribe to get notifications for.
By default they’d get notifications for everything, but they could opt to instead only be notified when a tag is posted instead.
This would be incredibly helpful for creators like me who make a variety of content. If I do NSFW stuff, tagging it means people can filter it out of their notifications (rather than just searching through my page after stuff is posted.) It’d also mean that people who pledge for one specific project I run could only be notified when that project is updated.
You basically could designate certain tags to be “trackable” from settings, and these would be suggested when adding tags to posts (or even selectable from a drop-down). Not every tag would need to be trackable It could integrate with the featured tag option as well.
Or, a simpler solution could be a generic “track tags” option in follower settings (and potentially a “mute tags” option too), with a field where the follower can enter in tags they want to be notified for. This would allow the user to track (or mute) as many tags as they want, provided the creator remembers to tag them.
The current solutions to this situation otherwise include making a huge number of duplicate tiers, or running multiple accounts. Neither of these solutions are elegant and are a pain to manage (having done both before) and they don’t allow much control for the end user.