I do think that they have a team in place to make these decisions and the experience you’re describing was thoroughly tested and designed already.
One thing they’re frequently berated for is an emphasis on visual aesthetics. But I think that’s a misunderstanding - they design for function, and the aesthetic pleasure comes from that function.
I suspect they will find a way to make these match the visual look that these leaks suggest, without abandoning what you’re talking about. Probably with some tapered edge shape or something like that.
You obviously can make an Apple style mouse that plugged in sensibly, but that would require changing the case and internal layout. The way they did it the new battery and charge port fit in the space left by the old AA’s.
Also my Dell XPS is so bad if you pick it up by the corner of the unit it flexes enough for the touchpad to trigger clicks. Ugh.