The feature I want to see is the "blocked score" where it shows how many people blocked a user or a community. And the rankings from the most blocked user/community to the least blocked user/community. If there are too many, then just display the top 10. Maybe add some special icons for 1st, 2nd, and 3rd place. 🥇🥈🥉
That is simply not possible. Blocking is entirely done on your local instance by filtering API results according to your preferences. Nothing about it is federated out.
It would also open the door to harass those who block certain users/communities/instances, since federating it out would give everyone the detailed list of who blocks what.
Not to mention, any time you have a ranked list, there will be some subset of people trying their hardest to compete for the top spot, even when it's a negative thing.
You'll have to talk to the Devs of Lemmy. Dessalines is the main Dev I know but I think anyone who works on Lemmy would be able to answer this question