I mean, there are outside tools to find a player. Like the Lodestone's player search function. What I'm railing against is blind FC invite spam.

I am not saying take away FC invites, not at all. I'm saying if you have the Player Search menu open, you shouldn't be able to right-click on a name in there and send a FC invite, and then one second later, another name, another right-click, another FC invite, rinse and repeat. I don't know how to fix private tell spam though.

Maybe you're right, an invite cooldown sounds like a great idea, and a player-configurable chat filter would help things tremendously. Ideally, perhaps a cooldown would consist of this: if you send a FC invite, the cooldown for another invite ends in five minutes, or if the person invited accepts the FC invite, whatever is sooner.

Anyway, here's said player search function on the Lodestone. https://na.finalfantasyxiv.com/lodestone/character/