Development isn't really linear.
Chanel Harris-Tavita is probably in a make or break season only because he's off contract at season end so we have to make a decision on him. And because we haven't really seen any tangible improvement in his game over the past two years.
Rocco Berry is probably ahead of his development stage. How many 20 year olds are there starting at centre for their clubs. He's looked good IMO. Probably doesn't have game breaking potential but is advanced for his age.
Vailea is a baby still. People forget that he's younger than
Reece Walsh. Without any bias he's probably my favourite centre prospect in the league. You have to compare his to guys at the exact same age and position that are just dipping their toes into NRL like Selwyn Cobbo, Will Pensini, Tolutau Koula. He's a few months younger than all those guys and just as good imo. Elite prospect. The game on the weekend wasn't a good showing but ive seen enough flashes in QLD cup and the trial.
Katoa is probably slipping behind the development curve now a little IMO. He has massive potential but still makes really stupid errors (i.e. knock on from the drop out in the weekend easily avoided if he faces side on so it knocks back, among many other examples). He just isn't advanced in his IQ like
Berry. But he's worth investing in still because of his frame, how many second rowers are that size and move like him (can only really think of Olakau'atu and Kikau). But he needs to start showing improvement this season