For issues you find with the Switch and Console releases, please follow this link and give as much detail as possible. This is the speediest way to get info to Pipeworks and get a hotfix in the works.
1.4 will bring many changes to the PC version. We strongly advise making plans to back up your worlds and players prior to updating your game. More details here.
Begin your search for Journey's End information here and here. Please report bugs and issues for Journey's End here.
For issues you find with the Mobile 1.3 update, please follow this link and give as much detail as possible. This is the speediest way to get info to DR Studios to look at your issue. Also, some troubleshooting hints here.
I'd recommend Revengeance. The last time I played Death Mode it didn't have those strange, obnoxious environmental debuffs in virtually every biome like it was trying to emulate the similarly obnoxious Masochist (Eternity now?) Mode from Fargo's. Of course, this is a personal issue because it just gives me even more mechanics I need to juggle alongside the vanilla and base Calamity mechanics, but it could be a chore for many people too.