Heh, most people tend to use the spelling "Catillac Cats", because that actually has been the official spelling since the early 90s, or whenever it was DiC put out that "Cats & Company" VHS tape.
They changed it from "Cadillac Cats" (which is what was used in the model sheets, storyboards, and original Heathcliff tapes) to "Catillac Cats" because they got cold feet again about the Cadillac car coming after them for using their copyrighted name.
As for who should voice Heathcliff. Well, since Billy West really cannot recreate any voice done by Mel Blanc, then I'd strongly suggest someone else who can. Blanc's voice for Heathcliff was really Bugs Bunny, but with a more street-tough persona. Maybe Joe Alaskey could recreate it, or possibly Frank Welker.
They changed it from "Cadillac Cats" (which is what was used in the model sheets, storyboards, and original Heathcliff tapes) to "Catillac Cats" because they got cold feet again about the Cadillac car coming after them for using their copyrighted name.
As for who should voice Heathcliff. Well, since Billy West really cannot recreate any voice done by Mel Blanc, then I'd strongly suggest someone else who can. Blanc's voice for Heathcliff was really Bugs Bunny, but with a more street-tough persona. Maybe Joe Alaskey could recreate it, or possibly Frank Welker.