I feel like restarting again when next gen comes. It terms of profile and gamertag/achievements.

I have to many games on backlog that I don't feel like finishing them all. I just want to play the most good games this gen. I feel like restarting my gamertag and just play games that interest me/are the most fun.

Sounds like a terrible idea

Good luck with that.

I couldn't stomach losing all the hours I've put in the last 2 generations.

Couldn't do it. I'm at 76k achievements since 2007. For me, it would be throwing away all my accomplishments over the past 13 years.