I recently got the air 3 and it immediately became my daily driver for all my work and youtube channel. Thanks to ipad os I can use my mouse and make it into a desktop environment where I can edit and upload my videos. But I have been noticing how limiting lightning is. I have to carry two dongles and a powered usb hub in order to use my peripherals.
So I have been considering upgrading just for USB C but depending on what the new pros offer, I might wait until the 2020 models since speed wise, this ipad air 3 is perfect. It is literally just USB C that I want in order to make my setup perfect.