I think the only defenseman to come up through the system under Taylor's watch was Joe Corvo, and they let him walk as a UFA. Visnovsky was an overage pick, as was Lilja. They traded Grebeshkov, and guys that they drafted or signed as prospects, such as Rullier, Pudlick, etc.
Look at these numbers from the last four Al Murray drafts with the Kings:
2006 draft (Al Murray's last), none of the 4 defensemen selected ever appear in a single NHL game.
2005 draft, none of the 4 defensemen selected ever appear in a single NHL game.
2004 draft, only 1 defenseman selected (Paul Baier) out of 9 selections (yet two goalies were selected). He never appears in a single NHL game.
2003 draft, not a single defenseman selected in the deepest draft in NHL history. They select two goaltenders though, with one NHL game between them (Ryan Munce and Matt Zaba).
So between 2003 and 2006, Al Murray and his staff couldn't draft a defenseman who could crack the NHL. That is beyond terrible.
Then in 2007, they draft Hickey, who is now playing full time in the NHL with the Isles, and Martinez, who has appeared in 203 regular season games and 59 playoff games.
In 2008,they draft Doughty and Voynov, and at least used Teubert to acquire Dustin Penner who played a pivotal role in the 2012 and 2013 playoffs.
In the past couple of years the Kings have also drafted defensemen who have since graduated to the AHL where they continue to develop their games. It's a significant change from the Dave Taylor/Al Murray era.