II will respond to OP original question and his interpretation that they can be effective at this level and above.
Certainties:
Macari
Palmer
Bostock
Langstaff
McGoldrick
Crowley
Langstaff
Jones
Robertson
Potentially:
Jatta (physucality)
Scott
Baldwin ( if he loses his arrogance and has someone he respects alongside)
Chicksen ( could do a job in a 4. Quick, does sense danger, just dont ask him to forward.
TAR ( Id like to see him in a 4 at R
JOB (player coach, use in emegency)
Never:
Cameron ( he is really poor as a player and captain)
Rawlo ( great pro but too slow now)
Brindley ( doesnt want to play)
Nemane (Crowley acts as his guide dog. He wouldnt have a clue unless he's spoon fed opportunities to cross which with remarkable consistency fails to find a team mate)
Slocombe
Stone
Brooks ( if he cant get a game in front of thec3 we have now, its a waste of a wage
Austin ( sad to say this because he really tries, but probably a little lightweight and not quick enough to compensate)
Munakandafa ( no progress, doesnt look good enough)
Not seen enough but probably no:
Bajrami
Morias
Randall
Cant say yet:
Colkett
Would keep with potential to bring through:
Mahovo
Sanderson