I'm back into this now after a long time away.
to them for adding so much new content without making you pay for it. The new "Legendary Gem" upgrading system completely changes the high level play from what it was like when I last stopped playing. I spend a lot of time running through Greater Rift runs to level up the gems in my rings/amulets.
The game is also much MUCH easier than it was when it was first released. I only play in HC mode on the PC. In the couple of weeks I've been back, I've never seen anyone else die and my own health has never ever even dropped into the red zone. I remember back when going past Act 1 Inferno mode used to be instant death.
I would actually recommend HC mode to everyone now, unless you have a bad connection. If you know what you're doing it doesn't take all that long to get back to Level 70, and with the increased stash size you can store up on "Reduced Level Requirement" equipment to pass down to another character in case you die.
Only thing I hate is that they totally got rid Legendary Item trading. I don't understand the reason behind having a Clan system if you can't trade items between characters in the same group.
With the "Boon of the Hoarder" gem, I already have over 150,000,000 in gold. I remember back in the days when you could have traded that for like $100 in real money. But now, gold is just basically a crafting material.