Can attest as a non-pro photographer (but as someone who cares a lot about photography), that the SD card built in is not that important. I tend to use a dock/reader anyway because most of my cameras use CF or mini SD. True, full sized SD cards are actually not used in any equipment I have now.
CF has always been used in high end bodies, but most of them still have a secondary SD card slot. And these days SD is fast enough to be used as the primary card and there are flagships like the Sony A9 that only take dual SD cards.
