I've had Scroll on my radar for a long time but only just got around to playing it. Great missions with a very Vasudan atmosphere and dialogue. I actually really liked the scanning stealth missions and the stealth HUD is a big improvement over older campaigns with stealth missions. It's fun to play through both branches and see the same events from different points of view. The music is also very fitting for the missions. I especially like the piece in the first stealth mission. The voice acting works well and took me a while to understand. The Terran speech sounds garbled to you as a Vasudan, and then the translator says it in a way you understand. I totally lost it when I heard what audio was used for the Vasudan laugh.
Like BTA, Scroll gets a lot of small details right to create a world that sucks you in, without ever feeling very dramatic. I like how all the tech room descriptions express a Vasudan point of view and the "GVTA" follows that idea too, V comes before T from the Vasudan perspective. However, I agree with SF-Junky that the story doesn't really explore its potential, at least in Part 1. What are the Shivans doing in these systems? They seem to be in a defensive posture compared to FS1 or FS2 and are easily deceived until the last two missions. I'm guessing that will be for Part 2. The scroll verses also feel disconnected from the campaign plot, as nicely written as they are. Maybe in Part 2, you can have the scroll describe missions in an allegorical manner from a "narrator's" perspective and you then see it play out from a pilot's perspective (the game Cryostasis is a great example of this).
I'm definitely looking forward to Part 2 of this.