Also:

* How do you show that a like, Retweet or reply was in response to an earlier version of a tweet that might be vastly different from the tweet you’re seeing now.

* Do you reset a tweet’s likes and retweets when it’s edited? If not, what’s the policy on selling the edit on a viral tweet?

* How many times can you edit?

* Are older edit versions persisted or deleted?

* What’s the policy on a tweet that violates the ToS and then is edited to not violate the ToS?

I’m sure there are more, but it does get complex at scale I’m sure.