There are plenty of useful scripts, but they are all to fill specific needs. So if you’re doing fine as-is I’m not going to just throw out the names of my favorite scripts. They may cause you more hassle than benefit unless you have a need for them.
As for other threads, I always recommend book clubs. You’ll need to decide when it’s the right time to start reading, but it can be easier to read early on if you’re reading with a group.
I haven’t heard about plans like these, but I’d guess it’s not likely. They fix typos or other issues with the sentences regularly. Imagine if they also had to re-record audio every time they did that.