Not to sound too dark and fucked up but given Venom wasn't initially intended to be in Spider-Man 3 I think it would've been way cooler if the execs let Sam Raimi go with the original plan of revealing in the final confrontation that Venom had actually eaten Eddie over the course of the film and was puppeteering his skeleton around. It's traditional Sam Raimi horror and really emphasises both how far gone Eddie was -being willing to let the thing eat him if it meant it would kill Peter- and showing how dangerous the symbiote is.

(Yes the original concept would make it more of a parasite than a symbiote but idc it's still a way cooler idea)