Yeah, that would have been awesome. The thing with EK though is that he assumes that the Hydra isn't very powerful due to its lack of feats, which isn't true. The heads' striking speed is fast as we witness it against V4 Susano'o and the whole thing is larger than bijuu sized since it's larger than Manda, who is bijuu sized. Maybe it can burrow underground and swim like other snakes can, since it's still just a snake with 8 heads and I think mythical hydras were depicted to be able to do so.
I didn't assume it wasn't powerful.
I said it didn't show anything.
I don't doubt the kages we were never shown in battle were strong, that doesn't mean they actually did anything to debate with, though.
There's nothing to reference it's striking speed off of, either. You note it hits susanoo, but Itachi wasn't even trying to dodge anything. Susanoo would protect him and so would yata. We weren't shown how fast it can move. We weren't shown any techniques from it other than stuff Orochimaru can do without it.
We can assume it's the strongest technique ever if you want to, but that's not gonna mean anything. As of right now, it's an immobile 8 headed snake/dragon that can bash it's head in to things/bite things and Orochimaru can use kusanagi from.
People say "look past the feats", but there's nothing else to look at. There's not even any hype for what it can do. It has the hype of being Orochimaru's best technique(which is also bullshit cause Edo Tensei >>>>>>> ), but that tells us nothing. Same as we know the 2nd Kazekage used puppets, but we have no idea what his puppets did. For all we know he'd destroy Sasori and Chiyo. Or he's a weakling compared to them.
I didn't write the manga, I can't do anything for it.
Good thread overall, though.