Feel free to post your ideas 
Personally I am with @codinghorror here just stop allowing people to edit posts after say 10 minutes and see how it impacts dynamics on the forum. I think only a very tiny percentage of legit users will be impacted, and spam bombs will not.
One change I totally support here is a site setting for “disallow non bumping edits”, that way nobody can edit post #3 in a 6 post topic, but the edit window can be left as is and the last post in a topic can be edited for a while.