I've often pondered what I would do as my last Tweet. For a long time I thought it would be.

"So long and thanks for all the Tweets.”

More recently I've come to like.

"Don't cry from me ArgenTwitter."

At this point I'm not doing a last Tweet. When it happens, it'll be simple account deletion, no notes. The only winning move is not to play.
@paul if the point is adv being cut off from tweetbot users, and they would charge you a value for the average yearly ARPU for the API access I would happily pay. But if you create a decent iOS/MacOS client synced via iCloud I’d rather pay you than that entitled asshole!