I like Jeff Hardy, but we all basically figured he was a sure thing in AEW anyway, so it's not really as fun of a surprise, but the crowd would pop so it works.
People like Keith Lee, Gargano, and Kross aren't really a sure thing in AEW, apparently Keith Lee and Mia Yim are getting married this weekend and Gargano is still saying he's on a break waiting for his baby, so one of those guys would be more of a "shock", but if it's Jeff Hardy and it makes the crowd happy, it's cool. I'm sure the other guys will be here eventually anyway.