I am completely against these rinky dinky cameras, not sure what appeals to you, are you hands small? A camera should fit well in your hands, the 5dIV fits perfectly, the Sony, Fuji cameras are too small, feel weird in the hands. I really hope Canon keeps their dslr ergonomics, I would be a shame to lose that. The R is small enough that its pushing the boundaries of feeling right in the hand. I'd prefer they don't break a winning design like the 5Div ergonomics.
A little harsh calling the R & RP 'rinky dinky cameras'. I have the R and I don't especially have small hands and it fits great, even without the grip extender.
The point of mirrorless bodies is that they can be smaller and more efficient, so making them bigger and heavier to keep the form factor of DSLR'S defeats the object dont you think?
Putting a grip extender on to balance having a big lens makes some sense but normally even with an RF 70-200mm on, I don't need a grip extender, plus, the R body, an RF 70-200mm & RF24-105mm & Tripod fit snugly into my rucksack without being too heavy to be unmanageable.
I can understand anyone used to a 5D or 1D series finding the Smaller form factor of the R different to start with but that's the way the industry is moving. I'm sure there may be a 5DV coming along so if the R isn't your bag, maybe wait for that or go for the 1DX MK111 when it is on offer?