I got to lv 22 during the first days of Beta. If you like ARPGs you'll like this one. It took aspects from previous Diablos, POE and Grimdawn. Upped difficulty on Veteran mode from the start. Barb was easy mode, rogue not so much.
Plenty of dungeons, sidequests, challenges, builds, legendaries, achivements, multiplayer timed events, world bosses, mounts, free transmogs... You see other players in town and in the wild, which I found nice. Flexible and relatively cheap respec of points. That's just the few hours of content I went through.
Obviously I hope they won't make this P2W somehow but it's Blizzard... I'm not expecting morals from them.
