[agonmon]

I loved all of Seveneves, and hate Three Body Problem. The biggest difference in theme being, optimism that humanity can overcome any obstacle and flourish. If you want more in that vein, see:

Aurora - Kim Stanley Robinson

Project Hail Mary - Andy Weir

Delta-V - Daniel Suarez

[idontwantthis]

Have you read other non-American/non-Western Scifi?

It's not a universal assumption that the future is good and technology will make us better. I love Soviet sci-fi for the completely different perspective.