My absolute favorite modality is one I don't use all that much at the moment: Zed's edit completion.

If you're unfamiliar, it's like tab-completion, but it has a context that includes the edits you've made in the last few seconds, and it can predict around the cursor.

The model isn't advanced enough to understand complex tasks, but it has more the feel of the "crafting gun" in Subnautica or other survival crafting games, if that analogy makes any sense.

Personally I hate working with a chatbot - it's low-bandwidth and rage-inducing. If I could imagine a perfect workflow, it would be something like me whispering my train of thought as I program, and then pointing a very fancy "autocomplete gun" at the code.