I'm somewhat surprised I'm not very concerned about not leveling up anymore. I guess the steady flow of very rare or legendary items helps, a lot. Overall power does increase each new item for underutilized item slots.

And the game does still tracks XP, last I checked I had accumulated 95,000 extra XP, so that's nice.

Mainly it's the story and continued challenge where I'm so close to finishing that's urging me on. Current and previous choices and continuing consequences are very rewarding.