i'm impressed with how quote-boost was implemented here: i just saw an interesting quote-boost and the interface notified me that i'd blocked the server OP was on, asked if i wanted to see OP anyway, and i said yes and saw an interesting post
i'm not a computer toucher but this seems to indicate that it's possible to do some form(s) of reply controls with some 1, functionality and 2, nuance, in spite of how federation does weird things