Got mine yesterday, nice timing as it appears the touch issues have been resolved.
Too early to say but no regrets yet. Doubt I'll have any, I use my phone less and less these days, went max a few times in the past but have gradually gone smaller. I even tried a dumb phone/iPod Classic combo for a little while. Hoo boy, it was honestly too much of a struggle. Didn’t miss the mindless browsing & YouTube, but I did miss the occasional Google Maps usage, Apple Pay, Apple Music, easy podcast access, live train times and weather app, camera for reference use, and the little texting I did was an ordeal on the dumb phone.
As such, the Mini feels wonderful, back to being largely a tool again rather than box of fun and distraction. I'm not judging other users mind, each to their own, I'll probably use my 11" cellular iPad more on the go.
I've always used phones without cases, intended to do the same with the Mini. However, it feels so incredibly small and light I can barely feel its presence in my pocket so I actually want to use a case for it. Ordered an Apple leather.