It looks like some opposition to the longer editing window is appearing on another thread.
I supported your decision to remove some of the 'time pressure' on posting because I believed it would make it easier for people to review their contributions and make improvements. I felt that better written posts would have more value to both the reader, who could concentrate on the issue under discussion and not waste effort deciphering what was meant from what was written, and the writer, who, once seeing her words on the screen, may also see the areas where she could've expressed herself clearer.
However, I overlooked the all too human tendency to exploit whatever advantages present themselves, even if it brings an overall deterioration to the quality of the site. I viewed the longer editing window as an opportunity to improve my posts. I failed to see it would also present an opportunity for unscrupulous posters to weasel away from their words and excape accountability for what they post.
I still support your decision for a longer editing window. I-Hub management will need to decide who will be best served: those who try to create quality posts, or those who are attempting to scam fellow members or inflate their self image as some all-knowing savant.
I take some comfort in observing that you haven't been pushed around by bullies in the past. Whatever you decide in this matter, you have my support.
Cheers, PW.
P.S. I'm seldom pleased with my first attempt at most things. Internet posts are no different.