You're going to love the M1 MBA, and I doubt you'll notice much, if any, performance difference between that and your Mac mini. I have not been a huge fan of laptops in general in the past, but I feel like the M1 MBA has all the things I like the most about Apple's tablets and laptops all rolled up into one. It actually caused me to ditch my iPad Pro. Here's why:
--thin, light, and portable even WITH a keyboard attached (iPad Pro with Magic Keyboard is pretty chunky and heavy.)
--performance is on par with iPadOS--click an app, it's open (for the most part)
--no fan noise, almost zero heat--mine has never gotten above room temperature
--battery life is amazing--no need to micromanage charges or plan ahead to be near outlets unless you're REALLY low
--the keyboard is back to normal and it's wonderful--I hate the butterfly switch keyboards
--runs all my "pro" apps and games without so much as a hiccup
I love this machine. I know laptops aren't the new hotness anymore, but I think we're about to see a new surge with the MacBook line. I'm interested to see how M1 and future iterations of M chips do in a normal economic environment when the global need to work from home isn't such a widespread issue anymore. I have a feeling Macs are just going to keep booming from here, at least for the time being.