You are misunderstanding what I said. Either one of the 2 issues I linked would fix the specific problems you outlined. You don't need a globally sound type sy

You are misunderstanding what I said. Either one of the 2 issues I linked would fix the specific problems you outlined. You don't need a globally sound type system, H-M inference, or anything like that to fix those specific problems; local inference and opt-in nominal typing would work just as well. Having used TS daily for a few years, I can vouch that your cases are pathological, and don't come up in practice often, if at all.