Just because the question of exactly how much 'goblin blood' the baby has wasn't answered within the story does not mean that the story 'doesn't make sense.' You think that maybe, just maybe, they're planning on revisiting the goblin baby storyline sometime in the future? No, of course not, because the editors who work at marvel are all incompetent hacks right?
The question of how much so called 'goblin blood' is in the baby don't really register much with me. As you say, it is something they can touch upon later (but is actually a large pot hole in the plot at the moment). What my beef with the current story is about is related to Harry's existing son, Normie Osborn. Where is he in all of this? The least they could do is mention him in this context, or is he removed from continuity? If this story is directed at a new audience, then it would make sense if Normie didn't exist, but then everything that happened before OMD could not have happened exactly like they did, only without the marriage. Editorial neglect. And when exactly did Harry arrive? How old is Lily supposed to look when she is getting on the glider (not in her 20's, that's for sure)? It is anoying that we don't get any hint at all about these details, when they are relevant to the movement of the plot. And just for the record, I am not calling the editors incompetent. Just lazy.