Let me see if I am keeping count on how the gamer benefits from all of this...
Some Cons?
One of the most expensive PC games.
No Offline Single Player, at the mercy of Blizzards servers, schedules and desire to keep the servers operational into the future.
People randomly lose characters and many hours of progress. (randomly means can to anyone at anytime)
People randomly lose achievements that hinder progression. (randomly means can to anyone at anytime)
People get randomly kicked out of their game they are playing alone, sometimes in the middle of a boss fight as some reviewer experienced.
Many people experience rubber band lag with teleporting enemies, for some this is ridiculous in this day to have that kind of performance in a single player component of a game.
People cannot play whenever they want, it must coincide with Blizzard Battle.net uptime.
Many people are waiting for this fiasco of random issues to be patched/fixed before playing the game further.
Some say it lost the pull you back in of previous Diablo games, something very palpable called gaming magic.
"When it's done" = in MMO terms I guess it's always done and yet isn't, obviously this isn't with no PVP and no RMAH, promised, but later extended to finish them.
People are now getting their battle.net accounts hacked for the express purpose of stealing their loot, in seconds. People that get back into their account find an empty character, at best.
Graphics resources kept within console resource limits by way of some decent art tricks, some say it looks quite dated.
Some Benefits?
Graphics resources kept within console resource limits by way of some decent art tricks, some say it's the most amazing graphics they have ever seen, fps performance is high.
No cheats in the PVP game, "done when it isn't".
No Hacking. Although the game will be available for free shortly, maybe better network quality than battle.net.
A place to buy and sell loot for real money while Blizzard takes a percentage (recently announced ofcourse), "done when it isn't". (which many people say takes away from the excitement of looting when nothing drops for an hour even close to that measly purchase.)
Some of the problems may be getting better, though questionable.
This is considered advancement.
There is very little good reason to defend this. Much has changed in recent years, but even five years ago the PC gamers with spines would have crucified a bug ridden release like this, regardless who their name was, not give it 90's and above in reviews. To see the reviews of this game is disgusting, a disservice to unknowing customers.