Gallant is pretty good imo and could go good on the wing or fill in for Bowen when injured.
It's not when Thurston is out that the cowboys lose every game, they definitely are no where as good but usually when Thurston and Bowen are out is when they're fucked, would be the same for if the likes of Gidley and Taia or Hayne and Hindmarsh were both out though imo, even though Thurston > Hayne and Gidley.
I don't know who you lost Pat but I could have sworn I saw the player transfers list and the Knights lost alot and gained nobody, that's the same for a couple other teams too though so I may be wrong.
Aaron Payne is a huge help, without him in the team Bowen and Thurston have been worse stats-wise, he's very underated. Luke O'donnell is fucking awesome too, clearly isn't a two man team, everybody just says that because they are the top two in the team by a long way, it must be hard for the other players to be recognised with those two in there.
Pat, Junior Sau, Chris Houston, Cory Paterson and especially Jarrod Mullen are all highly overated and while Gidley is good I feel he's very overated too. McManus, De Gois, Hilder and Taia are good though.
The eels are just gay imo.