Dancer, because it's one of the very few jobs that have any kind of reactionary actions, and the only job with direct synergy with the party due to dance partner.

Summoner is the most sterile and boring 'selfish DPS' of not only XIV but any mainstream MMORPG. But hey, braindead rotation, no need to remember your party exists, and flashy bang bang woosh shzaan wham woo visuals. Perfect for the average XIV fan who thinks raids are toxic.