i wish the iPhone would get thinner again... i prefered the thickness of the iPhone 7 compared to the X.
Same here, I actually prefer the thickness of iPhone 6, which was the thinnest iPhone if I remember correctly. But even that is 6.9mm, iPad Touch were 6.1mm and iPad Pro at sub 6mm, both feels much much better holding it.
Hopefully with many small battery tech improvement down the road we could have thinner iPhone without compromise on battery.