Everywhere I read about it, people kept saying it's not worth it. I just did it - I'll see.

In the patch notes it should say that somewhere, but the rewards seem helpful (apart from the fact that you can start the grind over): You get more total skill points to distribute, more storage space, faster leveling and more resources from scrappy.

The difference isn't crazy, so maybe that's the reason, but I did it anyway. Mind you, I never had any looting route in mind, just went for the area where there were more trinkets (Buried city seems somewhat okay for that), picked up stuff that I wouldn't normally, but it sells decently (even arc performance steel, drivers, hell, even full stacks of arc alloy), and tried to craft whatever I could, instead of buying it.

I read somewhere that the amount required was decreased from 5 million coins to 3 million for the maximum reward because it was way too grindy. I went for 3 and ended up with ~5.3 by yesterday, but I have no life.