What happened with the Sequence Reruns? I was getting a lot out of them. Were they halted due to lack of a party willing to continue posting them, or was a decision made to end them?

I never heard of such a decision and if it was made then it can be ignored because it was a bad decision. (Until power is applied to hinder implementation.)

If you value the sequence reruns then by all means start making the posts!

I personally get my 'sequence reruns' via the audio versions. Originally I used text to speech but now many of them have castify.