Sorry I didn't realise you aren't allowed in a squad if their is a better player than you in that position. Tompkins is a better player than Connor, I'm not sure you will get any fans arguing that, but Connor is a fantastic player who can play FB, Centre and halfback to a very good standard, how many other players in SL can play as well as him in those positions.
The fact that Lyne and Sargisonson are in the squad above him, is the reason that Hull fans and fans of other clubs are shocked he isn't in the squad.
A player with his ability, his utility value and the fact he has stepped up (unlike many other supposed better players) internationally are the reasons he should be in the squad. He has his flaws, but who doesn't, I can show you plenty of clips when Tompkins has missed tackles, bad mistakes and mouthed off, but he doesn't get the unfair press that Connor gets.