I'm currently on NG+8 (at 120 hours played) I think and it's funny how i'm becoming like the other starborn just rushing all the artifacts and not caring about anything. I could probably do it in two hours per but I do get distracted.
Currently level 75-ish (can't remember exactly) and I do get sucked into at least upgrading weapons, and in the Starborn Guardian the final space battle can be rough so I also end up getting the Razorleaf and working on getting it to C class stuff. But realy the upgraded weapons aren't necessary, can usually find a good-enough weapon getting the artifacts.
But the artifact chase means there's no point in building anything as it'll just be gone. Sometimes I think I'll chill on this run, but then i've gotten all the artifacts and it's close enough to finishing one more time that I eventually just go for it.
I've become just like the other starborn - building relationships is pointless, interacting with merchants is annoying. Phased Time VII is godlike - these stupid mortals need to get out of my way.
I feel like maybe there's a lesson in here, somewhere.
I'm a bit of a role player so I can't really see my toon doing ng+ more than once. Losing everyone close to you (and everything you've built) seems a steep price for more power when you are already pretty powerful. The Pilgrim explicitly makes you admit it before telling you where to look for the Unity.