Roy Asotasi, Adam McDouggall, Bryan Fletcher, Dean Widders, Tim Brasher....
Asotasi had a great 2007, and a decent 2009 if you look at stats, he was actually the 2nd best prop all year, up to the point of his injury (Luke Douglas actually had the best stats). His 08 was ruined by injury.
MacDougall was also good for souths when he was on the paddock reclaiming a country origin jersey. Fletcher got NSW and Aus call ups whilst at souths, whilst he had been overlooked the previous years at the roosters.
Brasher played for NSW whilst at souths as well.
Other players who "made" their careers" at souths include Ashley Harrison (who went backwards at the roosters, before finding his feet at the Titans), Mark Minichiello (who continued great form at the titans), David Faalogo (who repped for NZ), Paul Stringer (who played very well at souths, only to go to parramatta and struggle).
Widders certainly went backwards at souths, but every team has those. Adam Muir, Russell richardson and Shannon Hegarty all came to souths out of form and on the outer with their respective clubs.....Muir was out of form throughout his time with Norths....
If you ask me, the roosters are probably the team with the most disappointments........
Brett Finch- came to the roosters as the game's next great half. Left as the most maligned half in the game. He had some glimpses of form at Parramatta, before playing very well for Melbourne.
Ashley Harrison- came from souths an origin rep......two very bad seasons at the roosters........has since returned to form up at the titans.......
Joel Monaghan- came to the roosters from canberra with wraps.....did nothing at the roosters, went back to canberra.....now a fringe origin player.
Mark O'Meley- the game's best prop at the dogs. Disappointing at the roosters.
Willie Mason- I actually don't think he was that bad for the chooks, but the fact that they are willing to pay $300k plus to get rid of him speaks volumes doesn't it!!! I don't think anyone will argue with the fact that he was better at the dogs......
Glenn Hall- played ok for souths, before hooking up with the roosters and doing nothing.....back to form once he got to Manly........
Anasta I think has stagnated at the roosters.....no better, no worse than his dogs form, Roberts was down on form at the roosters when one compares his form at the panthers, but really still played pretty well in a bad side, Myles I think is a better player at the roosters than he was at the dogs.....