I think that Canon is confident that their target market for the R1 - pro's in sports, journalism, whatever - prioritize other features of the camera over the cropping. Pro sports photographers have field access and are closer to action. They also tend to have pro level zoom lenses that most folks can't afford. In the technical tradeoffs, more MP's mean more data to move and process and (relatively) lower frame rate speeds given the same processing horsepower. So, yes, I can see where 30MP would fit the target market given the balance sheet of all the specs (still TBD) considered.
I have an R5 too and my top wish-list item for the Mark II is prebuffer shooting. At 45MP, I suspect the prebuffer will be significantly shorter than the R1's. But, I'll take what I can get because of the tradeoff of 15MP more to process.
