Here is your TLDR version:
- Game was rushed out because it changed dramatically late into development
- Game challenge is all over the map and mostly non-existent except for artificial challenges like Uber Lilith or the broken Pit Bosses
- Game is missing a ton of standard features to make it feel social such as Group-Finder/Match Making, and General Chat.
- End-Game content is very limited and Blizzard’s “fix” is to make you arbitrarily farm mats/gold from content that is a cakewalk so players have a “reason” to do open world stuff.
- Itemization is still a mess with a lot of affix bloat. The Tempering system is still heavily criticized for notoriously bricking GAII and GAIII items especially.
- Blizzard cannot figure out what to do with Unique items. They started off so very bad then made them worthwhile, then bad again, now they added a bunch and made having multiples mandatory for a lot of builds. So much for Unique. This makes item budgeting with an ever expanding Aspect system REALLY hard.
- Renown and Altars were just a collosal waste of effort to develop.
- Leveling speed keeps getting jacked up, however you realize that there really is no point to World Tiers and item tiers real quick now.
- One shots for all! Game balance is out of whack between enemy and player one shots.
- We have really only had 2 real Seasons this entire time - Season 2 and Season 3. Season 1 was just get Barber = win game. Season 4 has not been a Season at all. Season 5 undoubtedly will also not be a Season and be extremely short.
- Progression feels odd and stagnant at times. The Skill Tree stopping at 50, not allocating attributes, and then this convoluted clunky AA system “Paragon Boards” tacked onto the end of the journey.
- Blizzard seems to communicate more via Twitter than to their actual player base playing the game on the forums. There are not Class CMs that engage with the community and take feedback. Having a healthy relationship with the playerbase is good for the company and players. It makes players feel like they are being listened to and bond with a person who is an ambassador of the company. Likewise, the company becomes more personible instead of being a conglomerate corporation. To their bottom line however, it would increase as development decisions would be more precise and player engagement would increase.
- Last but not least, the Odd Season Team. Painful. Really. Painful.