One should be at the bottom one at the top. I understand space on the phone is a premium but a second port would make the phone so much more usable. Wired headphones, flash drives, camera modules, speaker modules, keyboards, even connection to a TV, all could be used while charging. It’s a shame it’s not a thing, USB is extremely versatile port, but you only get one and it’s used for charging half of the time. (I am aware dongles exist)
I’m disappointed Moto Mods didn’t take off. They would’ve been a great way to provide a hermetically sealed phone with all the optional stuff you wanted slapped on the back. Beefier battery, better controls, all the ports you want, etc. Like, a phone with a weak internal battery but then a magnetically attached external one so you don’t even have to open open the back of the phone to hot-swap.