The story mode is actually a new addition. It shares the fight state controller stuff, along with a custom set of "story variables" which can be set in a character's state machine, so elaborate scenarios with multiple pathways like in Guilty Gear X2 are possible. Set a flag if the character won with more than a third of its health, etc., that whole stuff. I always thought that was neat and was kinda expecting they'd bring that back with Xrd. Instead I got the world's longest cutscene. Not that this great, great Touhou tribute had any pathways, with this I just wanted something quick Liq can skaddiddle through during his stream, 10 minutes tops.
Testament was in the game for some time, but I couldn't make >him work. Not even the almighty crouching jab frametrap stood a chance against whatever the hell the Testament "AI" was doing. Thus Komachi (Testament) joined the rejection pit along with fortune teller (Dr. Baldhead) and Cirno (Sub-Zero).
But hey, if nothing else, I think this version fixed the bug that made rich monitor owners suffer in direct relation to their wealth. It's now locking the web version to 60 FPS. In previous versions this caused a dramatic slowdown, but the current version, almost a year later, is fine with it. So yeah, thanks for playing despite being busy with the super secret mystery.