I was disappointed with the slow SD slot on the 5D3, and USB 2.0 ( that.was pretty disgraceful ).
A smart accessory for Canon to produce would be a CF> SD UHS 1 jacket. If the same throughput could be attained - we could all migrate to SD. Useful for 5D3 and 7Dmk2 owners.
No more bent pins lol!
Personally I would happily pay for a "return to Canon upgrade" from the USB2.0 to USB 3.00 port.
In 10 years across multiple bodies, I have never had a bent pin, so that is the last concern I have with the cf format.