Waiting for the 16". Soooo glad I didn't pull the trigger on the 16" last Winter. At this point I don't need the extra ports but wouldn't argue if they came back either. I do hope we can always charge by USB-C as an option even if Mag Safe returns. Also, while I know it's not necessarily popular to hope for a lighter weight these days, I do hope it is somewhat lighter, as I walk a lot with my laptop in my bag and recently the weight has been wearing on me, getting old I guess. And while I didn't get the nano-coat on my iMac last year, I would definitely consider it if it was available on the MBP as I often sit in very bright coffee shops (well, hopefully again someday).
In terms of performance, I got a pretty maxed out iMac last year to carry me through the next few years as a lot of the software and plug-ins in my industry are very niche and I want to ensure compatibility. Now that I have that, assuming my industry comes back in full after the pandemic, I'll need something that can render well on the go. My 2017 MBP has always slogged when every I kick into 3d in auto cad and Vectorworks. Hoping for a real leap there with these new models.