Unfortunately this isn't really feasible on our end. Logistically speaking it's a much bigger hassle to deal with 100 people reporting the same common bugs over and over again, which is why internal & alpha testing take place before public release so we can catch the most common ones early by only a handful of people, and won't have to worry about having these same common issues in public release, making it possible to sift through more different uncommon bugs people find in the public release faster. That way we can keep things easier for us to manage as well!
New story is meant in the sense of that a new chapter of the game is being added, so the story continues from where it ended in V12.
There are also a ton of revisions coming with V13 to older content in order to improve story flow and/or fleshing/balancing things out better where the game was lackluster at first -- partially based on feedback we've received over the course of time, but also simply because we ourselves realized that some stuff needed improvement.
And trust me guys, we're aware of how excited you all are for the release of V13. Hell, we all on the dev team are super stoked for people to finally play the game again after two years! But we really do need to get through the last few layers of testing to make sure the game doesn't break at every turn or at crucial moments, so bear with us a little longer please!