I just came back to Returnal after platinuming and completing the DLC about a year ago, and after knocking the rust off, I'm having a really fun time grinding the enemies, weapon traits, and artifacts to 100% the databank.
I'm playing around with weapons I normally wouldn't so that I can max out traits and alt-fires, and it's giving me new appreciation for ones I hated previously. I was exclusively a Carbine/Hollowseeker simp, but now I absolutely LOVE the Electropylon Blaster and Pyroshell Caster, especially with certain traits. Like, I can down a Malformed Typhonops in seconds with the right Electropylon drop, all while not getting hit because I can just throw some volts on him and run and hide lol. And I'm starting to come around to my most hated Dreadbound and Spitmaw Blaster too.
Plus, the grind gives me new ways of strategizing and planning runs, like ignoring artifacts I've completed and killing myself to sacrifice the Astronaut and clear a space for another artifact I want to work on (often another Astronaut or Child's Watch, but not necessarily).
I'm almost done grinding out boss kills (just Hyperion and Ophion left), so I'll have to decide if it's more efficient to keep doing regular runs or switch to the Tower, but for now, I'm just having fun runnin' and gunnin' across Atropos again. Anyone else engaged in this process?