I writing this comment from my Mix 4.
I had to buy the Chinese version 'cause we still don't have a global one.
The performance is superb, flagship performance, the fast charge speed is blistering and the rear cameras outstanding.

But the front camera (perhaps with maturity issues) is sub par. The images appear blushed, washed.
I had a Mi 10T till I received the Mix 4 and their selfies were great.

The phone is phenomenal, but sporting the first implemented CUD is still a marketing stunt and not an improvement over other layouts.

I honestly think if someone wants to import a phone and have no worries about foreign or no warranty, just for a few tech features, that person would have to be extremely addicted to tech. I can not see sensible people doing this. Xiaomi makes a few interesting things like their laptops but no one I know would import their stuff instead of buying local. Local meaning locally available with support, warranty and service.