From memory (and I'm old so happy to be corrected) both Cronk and JT won't be retiring until after the 2018 series al least why don't just waiting see what happens in the next 2 years. All 3 will / should be in the emerging squad so they get to hang and learn from the best.
For me has to be the first one in 92. Was at the game with my mate huge Dragons supporter and gave it to him we back up in 93 and went to the game for another win