I wrote a post, and deleted, proposing the consumer-pro grid that SJ implemented
iPad: Consumer: iPad Mini, i. Pro: iPad Pro, IPad Pro+
iPhone C: iPhone XR mini, iPhone XR. P: iPhone XS, iPhone XS+
Mac: C: Mac mini, iMac. P: Mac Pro ( MIA)
Etc.
Simplify the product line and stop selling old models. There does not need to be a redesign every year. But there does need to be a refresh. And then cover the price strata with current models.
I agree, simplify the lineup. For laptops, just have 2 lines: the super-duper thin MacBook (Air) line, and a thicker MacBook Pro line that has a bigger battery & a decent dedicated GPU.