I hope it does. But I'm just a little bit concerned over multiplayer being the next big thing on the horizon of the EA high and mighties. ME3 already was rather on the short side when it came to the SP campaign without DLCs. Compared to it's predecessors.
In fairness, ME3 also had an incredibly short development cycle. Two years, at most. Probably less than that actually. MEA has been in development for over three years, so there should be A LOT more content. It's certainly going to be far more massive than ME3.
I do agree EA's policy that all of their games needs MP is ridiculous. I don't think the MP BioWare has done for their games is really that good. ME3 was okay. DAI was atrocious. I wouldn't mind actual coop integrated into the single player, but I don't care for the survival mode.