I still don't know much about the influence of seeds. I do reuse seeds for the same prompt or variations of it, but for completely new prompts I've never tried reusing an old seed because I don't know if there will be any advantage to it. I tend to just leave things to work 20-60 times and grab the best results and make bigger and more detailed derivatives, I go for 15-30 of those and then post the best ones.

Do you know more about what the seeds do if the prompt is completely different?