Basically the idea is to take a "traditional" Garfield concept and add, either subtly or overtly depending on desired context, dark humor to the mix.
This is all an elaborate metaphor, actually. Garfield's Dead actually is more reference to the comic itself rather than the character.
ALSO, I really have always wanted to push myself to see if I could actually do what syndicated comic strip makers do on a weekly basis, produce a new, three beat strip everyday.
ALSO ALSO, Don't expect it to only be Garfield that I make fun of, just cause the titles Garfield's Dead, basically any newspaper grade comic is subject to parody.