It seems like a worthy feature to implement across clients. We all make mistakes, and the ability to revise or edit a note helps to ensure that the author's intent is accurately reflected.  

 Wow, finally an opinion of yours I agree with! 

 I would bet we share more opinions than we differ on. It's just that issues we differ on are more sensational and prominent in current discussions.  

 in terms of user experience, amethyst's edit feature is straightforward & easy to use. i can also "propose edits" to other users' posts, similar to git.  

 That's right. I forgot about that. You can propose edits, and the user gets prompted to review and apply the edits. Very cool feature.