In all honesty, Sua hasn't been any better than Glenn on a consistent basis, and he has to be playing better than Glenn all the time to put him out of the side. Some of the arguments to getting rid of Glenn are comical for me. If we lose him and replace him with Sua, what are our other options? We are banking on Sua playing consistently well over the course of a season, huge ask for a young player. We then are relying on a bloke in Gillett who is coming back from a neck injury and who has lost strength in one of his arms due to the injury ( cant remember which one or how bad it is ) for one position, and maybe TPJ for another. IF we move TPJ long term there, good chance he will keep out Sua anyway. Plus there has to be a little concern over a big forward who has had issues with his hamstring for a lot of the year. Fifita is another of whom it would be a huge ask to compete at a high level for a whole year. Besides them, we are looking at Funaki or Staggs unless we move another player to the back row.
On Kahu, him leaving isnt going to open up a backline position for Bird i wouldnt think even if he does leave. Roberts has one center spot in the bag, and there is a good chance Boyd has the other. We will have spots for wingers ( which Bird isnt ) or maybe a fullback if Issako doesnt hold the spot.
If either of them want to leave for a better deal, i'd have no problem with it, its just some people seem to think getting rid of proven performers and replace them with unproven talent is a smart move. Its not, its a huge gamble.
On what i said about Shibasaki and Carrigan, its more about people jumping on the hype train with youngsters who have never seen them play. Thats why i mentioned Carrigan, he has been our best contracted forward in ISC all year imo, yet he doesnt get the headlines. The Shibasaki comment is more about fans just jumping on new players coming into the side and thinking they are the best thing ever, until the next bright young talent comes along. Loads have called for Dargan to play and based it on nothing imo. He hasnt even been as good as his halves partner at Norths ( who is also contracted to us ). At the end of the day, people have to earn their spots. Kahu is debatable with his form of late, but Glenn has thoroughly earned his place in this team.