Alex Glenn is solid but has been left behind a bit in recent years as the Broncos have gone for size and power.
Just on Briscoe Jr, he's exactly the sort of player you'd want a few of in a reserve team - competent in a number of positions and able to fill in the first team if required. The only difference would be playing for Leeds A instead of Fev or whoever. You only need maybe three or four of those guys, with the rest of the team made up of juniors having a go at open age and returning injured players/those just outside the 17. In the past we had players like Paul Gill and even John Holmes - happy to get a game with mates in the reserves and help younger players develop, with the very occasional first team call up.