I know that this is a free add on, and I appreciate that you have shared it for free.
However, it will only post new threads/in specified forums going forward, with the hashtags broadly set for all threads.
Is it possible to suggest a (moderator) permission to "tweet thread" and to use the hashtags set in an overlay for any older threads?
This may come in handy if there's ever a trending topic and a forum has a discussion on that topic. They could then (re)tweet the thread with the new hashtags to be picked up once again, using the trending topics specified in an overlay popup on tweeting it to match what is currently trending on Twitter and, hopefully, be seen again, as it'd use the newer hashtags specified over the default.
Moreover, if implemented, it would allow for manual tweeting (as opposed to automatically tweeting everything) of only the best threads (as a spam thread could automatically be tweeted since there is no approval queue), by having this unchecked:
I would gladly pay for that type of upgrade.