Interesting to think about. I think zaps are pretty much just for zapwalls and similar transactions. Minimum tips would lower the number of zaps but the total amount tipped, unsure, depends on the case, but would also probably tend to be lower most of the time (maybe). Besides zapwalls and marketplace stuff, the only part of this that makes sense to me is suggested donation levels of one specific amount, like "but me a hodlbutter (9000 sats)" and "buy me a coffee (3000 sats)." These would go great on a person's profile or some kind of pinned directory, however nostr handles external links, extra info, and such.