What I really like about this site is that it allows to edit the user posts indefinitely and delete them if wanted. Just one idea: It would be nice to extend the time a bit until the "Last Edit:" marker appears.
The reason is that at least for me as a non-native speaker I often find myself editing the post somewhat because after reading it again after a 1-2 minutes or so I think "Hey, that doesn't sound right". Because I'm not editing the actual content I then sometimes delete the post and re-post it to prevent it marked as "edited" - I don't know if I'm the only one doing that. Yes, I admit I could carefully use the "Preview" option, but it usually only dawns on me after reading it in the whole context after "Post".
Funny you didn't edit this post
I run into the same problem being another non-native English user here on CR. It seems silly that a post is edited within a few minutes of making it and others are bound to suspect what one's motives are for doing so. Nevertheless, I end up doing it quite often for almost exactly the same reasons as cited by you above.
A minimum time frame before the "Last Edit" appears with the post would be a nice idea!
Edited this post just for kicks ...
Cheers ... J.R.