It would be great to have private zaps as an option. A couple of other clients support them (Damus and Amethyst off the top of my head), and it’s nice having the option. For me, there are a few times I want to send them private and the rest I’m ok with them being public. But I’ve heard others say they prefer all of theirs to be private. I think having the option/feature gives more people freedom to zap.