I just watched this vid on the new drive and I got to say, Sirius Corporation doesn't have a thing to worry about in terms of their FSD drive supremacy. Achilles Aerospace's prototype drive is exactly that: a Prototype. So don't exactly expect this thing to suddenly change the face of the game. If a subsequent CG comes up to address some of it's major short comings. then sure, maybe Sirius will have something to be worried about. But not right now.
As it stands what we have here is basically, a Supercruise Afterburner, that generates ALOT of heat (and heat damage) and eats up a TON of fuel. This will definitely give the fuel rats more business.
There are some that have said this drive is slated for the AX cold orbiter build because it's the most common AX build used. Hmm that may be, but the fact the drive damages the ship before they even get there gives me pause as to it's utility to AX pilots.
If there is someway to balance the heat build up with a cold enough build perhaps. But that still doesn't address the fuel usage. Based on the video, you will use about 75% of your main fuel tank getting about 62 kLs. I couldn't tell from the video, but it seemed like the drive auto shut down at 25% fuel remaining. Again, not sure the utility of this to AX pilots, but then again we generally stage ourselves close by when attacking targets, Titans especially, so perhaps.