What about this. You pick up the game you can finish it without to much issue, not having to look up a guide to figure it out. then after you beat the campaign and start doing the keyed dungeons is when you really need to take a look at your gear and figure out why you suck.
Then the casuals who only want to play the campaign can do that and move on. The people who want to actually farm for gear can bang their head against the wall trying to figure out builds and itemization because its fairly deep (not poe deep)
P.S check out my post on attributes. Diablo IV A look at attributes