Seems like the iPad mini is a very good form factor. It's ideal for gaming, because it's big enough to see everything, yet small enough to hold it in the hand. For the same reason, it's great for reading, sketching, note taking -- unless you are painting an art masterpiece, or writing wall-to-wall equations. It's also great for navigation. Even the iPhone XS Max is too small to read, yet the iPad Pro is too hard to hold in the hand for extended periods of time.
Totally agree. The mini has always been my favorite form factor. I have and love a 10.5” Pro now, but would probably go back to a mini if they add things like pencil support, promotion, a camera flash, etc.