Something I have seen on a bunch of other AI assistants is the autocomplete feature in the input boxes of the chat and in the inline chat input boxes that are brought up in the editor (CTRL+SHIFT+C). They have been very helpful and speeds up productivity a lot. Basically, as you create prompts, other AI assistants predict what you want to say. I think this would make Cody even more powerful with this feature.
This could even be offered as a PRO feature only.