i played d4 on launch and it was alright, kinda boring - got to 75 on a druid and quit, haven't played since.
season 3 is a lot better - you can skip the slog of the campaign and then basically get to 50 off the seasonal quest line and a few random things pretty fast. after that getting to 75 was quick with open world / seasonal stuff and a few vaults/nm-dungeons. at that point you have a solid build figured out and start doing boss key farming. then do bosses and higher nm-vaults.
maybe i had more fun this time because i went sorc and had a build that required like 5 uniques (so i wasnt staring at micro % increases for random stats on legendary gear every 2 minutes).
season 3 is a lot better - you can skip the slog of the campaign and then basically get to 50 off the seasonal quest line and a few random things pretty fast. after that getting to 75 was quick with open world / seasonal stuff and a few vaults/nm-dungeons. at that point you have a solid build figured out and start doing boss key farming. then do bosses and higher nm-vaults.
maybe i had more fun this time because i went sorc and had a build that required like 5 uniques (so i wasnt staring at micro % increases for random stats on legendary gear every 2 minutes).