This is a good observation, with the observation that there are two different levels of latency requirements. Most of the time, I would be pretty happy with an

This is a good observation, with the observation that there are two different levels of latency requirements. Most of the time, I would be pretty happy with an untyped, unsemantic, mildly smart heuristic based ident completion while the asynchronous semantic one finishes. The nice thing about this dual setup is that I tend to only want the semantic one if I'm thinking more, so there's naturally a larger time budget for it. One must always think about the experience they want in UX first, rather than the tools they want to build.