FIRES outlines a few different things, one of those being a different model of federation management, not centered on binary decisions of "blocking or not", but instead a more firewall based approach: allow / filter / reject.
FIRES is also not focused exclusively on domain based federation management, but looks at issues that will become more pertinent as the Fediverse grows, for instance Hashtag or Link management.
Another idea it puts forwards is the use of structured data for labeling decisions, for instance, maybe you trust a providers' recommendations related to racism but not transphobia, or maybe you want the CSAM and DNI data, but not to block bridges. This is all possible if we've more structured data.