In fixing the delete feature it seems I enforced the edit times correctly as well. What's your scenario in which you'd want to edit a post after 2 hours?
I always reread my posts, up to days later. Sometimes I like to put in a better choice of word, correct a missing or improperly placed punctuation mark, a missed or incorrectly capitalized letter. "Tweaking" I suppose you'd call it, or perhaps, self grammar nazi-ing. I don't correct or change anything that would tamper with, or substantially change, the overall content.
Still, if the situation arises where I have to read my posts a year later, I don't want to be confronted with my errors if it can be avoided.
The self removal feature is very worthwhile. But, it's primary use is when server delay causes double posts. I don't line up to, or like bothering anyone by complaining about that, and with self delete it's a simple click to rectify the error.(y)
I full well realize you shouldn't be able to remove a post if another has made after it, or it has been used in a quotation. But, if you find out you've got the "I" before "E" incorrectly, and want to fix it, the time frame shouldn't matter.