Well, I know that Diablo games are full of revives, but it happens between each games, as the hero usually kills all the lesser and prime evils. So, I believe, that Lilith and Inarius are not going to be revived and this is the end of their story (at least until some next game). There will definitely be some clarification of the legend, as Inarius is obviously the Hatred which was pierced by a spear of light and he who was bound in chains was set free is Mephisto.
But there are others to be revived, because this can’t be a full game named Diablo without a Diablo himself, so …
I think Blizzard is going to replay the story of D2’s Dark Wandered mixing with D3’s Leah, as Neyrelle is going to be corrupted by Mephisto in a similar way as was the original Dark Wanderer corrupted by the soulstone. So, we will go in her steps, shouting “where is Neyrelle?” and find out that Diablo, Ball (?), Malthael (?) and some others are revived by Neyrelle, while Neyrelle’s view of the world changes and becomes an enemy too.
Aside from the Sanctuary world, I am also missing two big areas - hell and heaven (what happened to Tyrael btw?), so I am looking forward to see more of everything.
Knowing, they plan at least 2 big DLCs, I am expecting (the final boss) Diablo will be in the last DLC.
edit: styling
Short summary : Fixed an issue where players were having fun.
I was solo leveling to level 92 since the release. I was usually doing 1 to 2 paragons a day lately (usually more challenging/longer 2 NMDs to get one). Before patch I had one milimeter to do to get the next paragon, so I run a NMD 15 leveles above me and I didn’t reach it? 1mm? So, with the same game time, I am going to make one paragon in 10,14 days? There is already nothing to do after campaign, only the Uber boss to fight on lvl 100 and it took ages to get to 92 and now I really don’t feel I want to play it anymore. I possibly could swallow all the other nerfs, but lowering xp gain and slowing the progression for people who can play only a limited time daily or weekly is hearthbreaking.
I am definitely not going to play the first season.