Here's my choices... based on Johnny Depp in the lead...
Mrs. Lovett - Either Meryl Streep or Toni Collette (depending on if they want an "older" Mrs. Lovett or not)
Beggar Woman - AN UNKNOWN, SO THE PLOT ISN'T GIVEN AWAY. She should look like nothing more than an "extra" in the early scenes.
Johanna - Also an unknown... but cast her faithfully to the story as a 16 year old (so the actress shouldn't be more than 20 years old at the very most). And she should have a beautiful soprano voice... at least for a film. She doesn't need to be able to fill a theatre with it... just sound georgous on a recording. No more "mousey" Emmy Rossum voices!! I want a rich and full controlled tone. And they're out there!
Anthony --- I keep picturing Orlando Bloom, but that's due to the Pirates movies, no doubt.
The Judge --- Jack Nicholson. Yes, please.
The Beadle --- Robby Coltrane. Let's have a "From Hell" reunion.
Tobias --- Unknown. Cast him YOUNG. Should look 14 or 15 on screen.
Pirelli - Geoffrey Rush. Keep it all in the family.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22