The designers of 6th gen fighter jets are confronting the same challenge. The cockpit, which is an interface between the pilot and the airframe, will be optionally manned. If the cockpit is manned, the pilot will take on a reduced set of roles focused on higher-level decision making.

By the 7th generation it's hard to see how humans will still be value-add, unless it's for international law reasons to keep a human in the loop before executing the kill chain, or to reduce Skynet-like tail risks in line with Paul Christiano's arms race doom scenario.

Perhaps interfaces in every domain will evolve this way. The interface will shrink in complexity, until it's only humans describing what they want to the system, at higher and higher levels of abstraction. That doesn't necessarily have to be an English-language interface if precision in specification is required.