No BG, you lose the point.
The coaching staff and training staff would be in direct responsibility for recruiting the players, and the positions they can play.
So you might have 4 winger options, where you vote for only 2. If Coach doesn't want Player X to play wing, then you will not be able to vote for that player in that position. Only the positions they are eligible for as named by the coach.
You can only vote for the players as listed as available for their respective position by the coaching staff.
It has a few downsides, but it sure would be original in the NRL, and the coaching staff can have much more control over it than it may seem.
E.g. Like if the coach truly feels Uate isn't ready, he wouldn't have even been a voting option.