First of all, I want to say kudos to the Blizzard team in charge of Diablo 3 because this is the most fun I've had playing Diablo 3 since it came out. I love the new season and I'm currently playing a hardcore crusader (Profile here: http://us.battle.net/d3/en/profile/M.../hero/52062518) and having a blast gearing up. The only concern I have is the greater rifts and major flaws in it that keep it from being really fun.
The Main Problem: The monsters have way too much life past GR 30. I don't think anyone would complain if max life stopped after GR30. Instead, maybe more affixes or abilities that make the player think more about positioning. It should come down to player skill after GR 30 and not how much damage you can do because with current gear levels even GR 30 is out of reach for most hardcore players.
I am still gearing up my character, but from what I've seen from other player's streams is that it would be difficult for me to even want to go past GR25. I am more of a casual player but when I play I am very efficient with my time which is why I've been able to gear at a decent pace. I am doing more damage than most of my other guild mates so I feel I'm still in the mix to be competitive despite the fact I only have a couple of hours or so to play per night. Happy hunting friends, may the RNG Gods be with you.