Fair. I'm not really expecting "unique ideas" from the LLM; I'm expecting it to help me examine my own ideas (e.g. by restating and expanding them, and sketching out an implementation plan) while simultaneously doing research. And from what I can tell, this aligns very well with the strengths of the technology.

If I'm prompting with phrases like "Any ideas?", it's because I'm exploring a domain where I know I don't know a lot, and where I expect that there is enough prior art to get a foothold.