In 2021, the iMac got a major refresh with a spiffy new design and a new M1 processor. At the time, it was a much-needed update to Apple’s iconic line of computers, but not that it’s 16 months later, it’s about time for a new model. And possibly an even better one. After putting some thought into a new iMac, I concluded that most of the features I’d like to see don’t fit with the current iMac. Instead, I’d like to see a the return of the iMac Pro, which was discontinued last year. When it launched in 2017, it was largely seen as a stopgap between Mac Pro models, but it was an important machine…