Cool, the anime is superb, the live action films are surprisingly good (given most live action versions of anime normally suck). I just hope they do the source material justice.
L is going to be the pivotal casting, I wasn't keen on the portrayal of L in the Japanese live action films, just didn't quite capture the L of the anime right IMO.
They will certainly portray the Shinugami better, they were rather impressive in the Japanese live action, but look a little dated now that CGI has evolved quite a lot.