Physical bodies of dead gods have both been done enough times, and are not so common, that I think you’ll find a unique take pretty easily without needing to worry about plagiarism!
No wrong ways to answer these questions. Indeed some of your questions are ideas! I love the gross idea of people (or something else!) budding from a dead god’s corpse. What are those people or things like, do you think? Is any divine essence or power left in the body, and do they get any of it? Does it matter who the god was? What do the gods’ bodies even look like - giant people, or something much weirder?
I think it helps to focus on here and now questions; the history is secondary. This can also be framed as trying out some ideas to see how they feel. So do these people (etc) live on these gods? If they extract resources from the bodies, is that physical (e.g. they dig down to mine the blood and bones like oil and iron, or they cut down hairs like trees) or metaphysical (they consume the blood to gain some sort of power, meditate near the dead god’s heart to receive sustenance of some kind etc). And do you imagine this society has technology, and at what level - do they make trains and pumps, or wells and buckets?