I finished the campaign running as Zane. Reached level 41. I played most of the game with weremichael in co-op mode and we had a great time. We would mark off super baddies to concentrate on (Amara did her lift up enemy in a fist bubble and I would throw a grenade and then lay concentrated fire until dead - worked well). Fantastic game.
We played a 4-player twice for several hours each time. That is insane. Enemies everywhere, elements flying, explosions, rockets, pools of fire/chemicals/radiation. It was crazy. Zane freezing and slowing down everything was really useful for group mode.
I will turn on Mayhem and get Zane to 50 and then will start my next character. This game has so much replay. And I enjoyed the humour.
I'll second everything you said. The game shines in co-op, especially four player. My Wyoming internet connection struggled hosting the game with two consoles running the game (my wife hosting on the PS4 pro and me on a base model). The chaos was definitely as over the top as any gamer would want.
Frame rate definitely took a serious hit with that much action happening. I look forward to the performance patch whenever it drops. I'm glad they acknowledged the issue and said they're working on it.
Here's my review I posted to my clan's Destiny Discord server (Resetera's own Disposable Heroes) :
Alright! I just finished the story with Amara. The story is much better than the doom and gloom on Resetera would have one believe. The drop rate for legendary items is at a sweet spot for me and I haven't touched mayhem mode yet.
I've been a Bungie man since Marathon on Mac and I have to say that they've been dethroned by this game for me. Gearbox finally cracked the gunplay model. It was always the biggest missing link in Borderlands one and two for me.
Overall I'm left feeling melancholy. Destiny has defined my gaming this generation. With their promise of supporting D2 for another five years, I feel like I'm going to get left behind while I wait out my D2 burnout.
With that said, I'll paraphrase my main man, "BORDERLANDS FOR LIFE!!"