As much as I love reactions, there are certainly communities where this might be preferable! All about target demographics and flexible optimization imo I think reactions beg the question of how many types of events can receive them, and from there clients must decide when to allow or disallow them. Reactions are really only situationally valuable. Most people don't want 6 alerts for 6 likes, I'd imagine. Hope to see reactions become separated and scrutinized in future client builds
I would settle for emoji reactions, but no emojis in note content