I am going to cast a somewhat different vote. I have put in 217 hours in the game, according to Steam. It might be my imagination, but it seems to me that the game has gotten more "grindy" than it previously was. If I played for a few hours, I knew I would get a few good drops. But now it seems that even with boosts, the chance of good drops isn't nearly what it has been in the past.
The game now seems directed at those who can put in hours and hours a day into the game. This is something that I can no longer do. So the fun factor has dropped big time for me. The time-reward balance needs to be tweaked a bit, IMO. Mondays are about the only day I play now because of Midtown. The chests make it fun, and faster to level characters.
Maybe I am doing it wrong, maybe if I got in a party I would enjoy the game more. As of right now as someone who plays solo most of the time, it is much less fun than it was about 150 hours ago. There is also the chance I am just burned out on it.