I would love an "iPad Pro Max" with a 15 inch screen. I have a 13 inch MacBook Pro 2020 and an 11 inch iPad Pro 2018 and I have found that I can get everything in my workflow done using just my iPad Pro (with Smart Keyboard Folio and Apple Pencil). I love the versatility of using the iPad, being able to quickly and simply attach it to the keyboard when I need it, or unattach it when I don't. For me it's the ultimate setup for both productivity and leisure, being able to use it pretty much anywhere for work or entertainment. But I want the screen real estate of a nice big 15 inch screen, and I'd get the compatible Magic Keyboard with it--and I'm willing to pay big bucks for the entire setup if Apple would actually make it!
I would also love an "iPad Pro mini". As I've had almost every iPad iteration, I've had almost every iPad mini; I use them primarily as e-readers and I'm itching for a new one that doesn't look like every single iPad mini from the very first generation! I love the look and feel and features of my iPad Pro and would love it in the mini form.
So my dream (and it will probably stay a dream) March iPad Pro event would reveal a 15 inch iPad Pro Max and an iPad Pro mini (an iPad mini with slim bezels, Face ID and flat sides/edges). Please, Apple! My Apple Card is ready and waiting!