So, first of all, I think we all agree that there isn't a team on Earth that wouldn't be improved by having David Pocock in their team. Furthermore, unlike a Foley-Cooper argument, picking Pocock doesn't lock you in to a particular playstyle, so it's not like there are teams that would have to change their play to fit him.
The saddest part of Pocock's Brumbies career is that he has been here since 2013 and only started in 51 games for us. Ben Mowen (oh captain my captain) captained the side to as many games from 2012 to 2014, less than half as many years as Pocock has been a Brumby. Yes, the only game Mowen missed was the Lions away in 2012, but he could have missed five games a year and would have played 75 games over the same time that Pocock has played 51.
That aside, much as I am annoyed by the loss of Pocock, this team is (theoretically) good enough without him. I'm annoyed that we aren't seeing Pocock because there has not been, and likely will not be, another player like him, and I would have loved to have seen nineteen games of him this year. I don't blame the pre-season training for our position in the overall table; that's probably the fault of the coaches.