I had a great time going thru the main campaign and still having a really good time thru season 1.
While I agree there are improvements to be made for the endgame, I still feel Diablo IV has a great amount to offer. Per PSN I'm at 177 hours played with a lvl 73 Necro and a season 1 lvl 61 Druid. Besides the pause I had for FF16, I've been consistently engaged and having a good time.