The pencil is good, and now that they’ve fixed the unforgivable abomination of a charging arrangement on the original version, it’s actually realistic to use it.
Between that and the square edges, the new models are the first since the original iPad to offer a qualitative improvement.
As I type this on my 11-inch iPad Pro, tho, I am conscious that the main drawback - the keyboard - has still never really been addressed. They’ve even backpedalled on the split keyboard, which had a lot of potential as an idea. (Obviously, I am ignoring hardware keyboard options since, if that is an option for you, you want a laptop and not a tablet).