is #bluesky going to have sophisticated groups and indexing like #Lemmy and #KBin?
Is #Nostr?
Both of them could, eventually, but they're so far behind at this point. Don't expect it any time soon.
Actually might not be long till #nostr is there with the complex index pages.
They have satellite.earth and outer.space and zapddit.com all working on it, and Nostr can most quite fast coz it's simple and not corporate controlled like Bluesky.
Course, they mostly seem to want to mix that crypto money the use into the upvotes, which will ruin it for sure.
But won't be long till Nostr has some kind of reddit/group-index solution going.