What's my name again?

[eyloi]

Personally I don't like being called 'heals' or '<job>' either and use people's names myself, if you really want to get your message across you should use their names, be respectful. Same as irl, you don't go about saying 'Hey, human, do this.' or 'Hey, <job>, do that.', that would be really weird... and usually those who make up some kind of names for people tend to be assholes. :P
And in case if you don't know the player behind a character, either refer to the character or use 'they' instead of 'he', don't be rude.

This is a video game, not the real world. "SMN" is good enough when I need to tell you to use LB on something. If you want me to call you Aissy, you should take the time to befriend me and make the relationship more than just two strangers in a dungeon run.