The number one reason I'm dying to get my hands on the new 16" inch is only a better processor. Because I love my 16" intel Macbook, it's the best computer in the world right now according to me. I also owned the M1 Macbook Air, but that computer is too slow for me, like half the speed compared to my 16" since I use some programs, like in music production, 3D, and virtual machines that requires me to run multiple instances of Rosetta meaning M1 is like 70% slower than my 16" Macbook Pro.
But for all other use cases which I do most of the time, the M1 is much better and quieter and better battery life and some other advantages. So if they put up a laptop with somewhat twice the power of M1 (in multicore) that would be a much better overall one for me than my current 16" that moves its fan and heats up to hot to touch 90% of the time since I'm often using an external display.
But overall the current 16" is still amazing, cause I tested the latest top speech Dell XPS and Razer one this spring and they really sucked compared to the 16" inch Macbook Pro, so I don't get why people, in general, don't get that.