make slow-mode apply to everyone expanded

what i mean is that when you have thousands of members already and more joining in crazy amounts or even just 10-13 joining per minute which sometimes happens slow-mode as it is right now does not really do much to help prevent spam in these cases as slow-mode does not apply to these people until they talk once in the server correcting this as i see it means that if theres a for example 1 hour or even 30 minute slow-mode they will have to wait that long to be able to post which would make a lot more sense and would actually make slow-mode more useful for preventing spam