"How much would a repeat of Eliose be worth just as deposit in broad terms?"
You've caught me off balance as I'm still reading up on it!
As far as I can ascertain, Eloise has two main loads that are approximately 15m - 20m apart, have a strike of approx 650m and plunge 1,200m (maybe more).
She also has other loads, Eloise West and Eloise North West, although I don't know whether they have been mined or are viable.
The two main loads at Eloise are noted for a lack of magnetite. Instead they have an abundance of pyrrhotite.
I don't know whether the J2 load is a repeat of the two main loads at Eloise as I don't have enough information to go on. J1 could be an extra load and J3 may be unrelated, I just don't know.
From what I've read to date, I'm pretty sure that the mineralising event at the Eloise deposit and thus the ore formation was due to saline rich fluids and controlled by their cooling and in turn the sulphidation of Iron Oxide rich alteration that was already in place.
I don't know what happened at Jericho and probably will not find out until some time down the track.................... or until somebody on HotCopper lets us know.
Sorry to not be of much help. I guess once MEP start telling us more info we can perhaps extrapolate by factors greater or smaller than what Eloise delivered up as Ore and then times it by a net financial return per tonne.
I'm sure somebody will hype it up and give it a good pump if it comes up with the goods.