it would be more logical/practical to allow original poster to EDIT the post/subject before anybody replied to the post.
Can't you just pick the right subject in the first place when composing?
I've made probably several thousand new threads and probably once or twice had to edit a subject line. I don't see a real need for this feature...but that's just me.
If editing is really necessary then couldn't you just set the edit time to a higher number of minutes?
I also don't understand what is logical about stopping people posting before you edit the subject line. That doesn't make sense to me - what if you don't want to edit it - how will the script know when and when not to allow people to reply?