Never read the original thread.... I'll though my $.02 in...

Harry.. Jared Padelecki (sp) tall dark slightly dorky..and he could rock a duster..
Thomas.. Ian Somerholder.  just too pretty.
Marcone.  Daniel Craig.
Lara Raith.  Penelope Cruz
Karrin   - really stuck here.. not sure.
Susan. Sara Ramirez.. Callie torez from Grey's
Lea..  Angelina Joilie
Molly  Miley Cyrus.. that's right.. she's young and crazy and all.. but really quite perfect.
Odin/Vaderung   Liam Neison
Butters   Simon Helberg  - Walowitz from Big Bang Theory
Kincade   Alexander Skarsgard.