> All that said, the power you'd get from a Macro or Template system like Nim's don't really jive with Zig's whole "no hidden control flow" thing.

Only if you do it wrong.. It's quite simple to mandate a special character which indicates that "something's happening here", for example you could have y = a #+ b with + being a function operating on matrixes, the # indicating that this is a function called not the regular operator.