I think we need an open source set of 'bouncers / blockers' - that people can use, perhaps best as a chrome / ffx extension? That blocks content from various portals or individual posts or posters that you may not want to see.
Different people want to censor different things, and some want to censor the same things less and some more.. so by have an open source set of blocker bots people can discussion the blocking lists.. people can pick and choose what they see / not see..
That's on a basic beginning - I could see them also getting into 'unsubsbrcibe to stuff from server A and mastadon B' can take it further..
Since cloudflare came out as censor friendly - I've given up hope the big players will be all 'open info utopia' ever again. I think the best we can hope for is to get individual blocking bots and open up the web more. Otherwise we will have more censoring across the board and will succumb to whichever lowest common denominator of whoever gets to be in charge and make new rules.
This way some people can choose to filter sex workers and not furries and some can choose to censor furries but not sex.. Of course I am sure many people will choose some broad auto-block and stick with that, making their internet more like fbook's daycare.. but having transparent options will certainly have many people turning off the 'safesearch' and explore the whole world, or larger parts of it.
You are right in that we may need more tools for individual users to take control in this expanded universe.. but things like 'peter's ad block list' kind of things can be more beneficial than depending on MostPopular Mastadon Server being pushed to choose what to block for the masses and what to let through and the whack-o-mole that tends to create.
If they are open and clone-able / editable - some might want peter-and-pauls-block-more lists.. and some may like furfriendlyButnotPron lists.. and I hope many more options for choose your own censor.. rather than having them chosen for us as most have succumbed to.
My current random thoughts on the subject - hope others chime in to make it better and more of a possibility instead of just napkin notes.