D3 still doesn't have an offline crack to my knowledge because the crack isn't going to be simple. In most games, a DRM crack is typically as simple as editing a single instruction to jump over whatever code is trying to call the DRM feature.

But D3 and D4 are different. Essentially, a lot of game logic just isn't available to the client and stored on the server, so any hack will need to replace that. Console versions of D3 actually do have that code available, but now it's a non-trivial matter of porting that code back to the PC...

This will probably never happen unless the source code gets leaked.

I just can't justify purchasing a game where one day someone is going to flip a switch and permanently remove my ability to play it. I'm still playing catch up with games from the 1980s.