The res really does kill it for me.
I LOVE this camera,. and really wanted to be in the first shipment, but as it stands, I think I will wait. My 5 year old 5D4 soldiers on, and the R5 will give me much of the new AF tech with even MORE resolution. Again we are forced to decide between 1D features and modern up to date resolution. The merging of the 1D and 1Ds into the 1Dx continues to plague Canon even into the mirrorless era, where we now know the bandwidth is available to move the higher res data fast enough to create the no compromise solution. Canon just has to want to do it. All the tech is available and already in their own cameras.
When/if and R1 is released with a real high res sensor, I will then decide if I can swing that exorbitant price, or suck it up and shoot the R3 at 24MP at a lower used price.