I don't think follow bots are a good idea, because they make the federated timeline the same on every node. Without them, the federated timeline is still an expression of the interests of the node's users.
@lambadalambda It's not just at node-level that the bots have an effect, but across the whole fediverse. Individual follows select for what /is/ considered worth-following. Not perfectly, but at least probabalistically.
OTOH, it can be disconcerting to see a single boosted post from a thread without context. One of @maiyannah's from shortly before I joined was boosted to my Home, and all I see is her comment. Going to HA I can't grab timestamps.