I thought I was the guru of the foilkites...
"I want to change the ARC of the kite."
You mean canopy curve? Hmm, it may affect stability of the kite, but more of it decreases projected area which is usually not desired. It creates also some slack to the lower skins of the cells and some tightening (distortion) to upper skins. In other words, bulging and wrinkles. But of course something can be done with adjusting canopy curve.
Correctly done whole bridle must be redesigned.
"Pansh reduced the cell count on the A15 and improved performance with splitcells. Admittedly they reduced the AR slightly as well."
Splitcells? You mean mini-ribs or half cell diagonal ribs? I couldn't see any signs of those and I can see from the bridle that full cell D-ribs are used. But if Aurora has miniribs like sonic, fine.
Tendency in high performance foilkites is to increase cell count and AR. But I think the limits of this development are now more or less reached.
"How would you regroup the bridles? Can you post a picture. Have you actually seen a Aurora in real life? The bridle is actually IMO quite good. It's one of the most aggressively short bridles I have ever seen, shorter than the P4."
I checked Aurora bridle from the Pansh website and I have not seen Aurora in real life. What I saw is far from short bridle, on the opposite some primary lines were stupidly long, they had no secondary bridle at all. And some other strange things too, like very long c6 and c7.
I would regroup primarys 2 -2 -2 for the A and 3 -2 -2 for B and C. Brakes are ok. Then only 3 secondary lines per row/kiteside would be enough, instead of 4 (of which 2 is now just overly long primary lines). But this is not ideal either, since the design is not optimal.
Flysurfer used for a long time too long bridle, especially primaryes. Latest kites have finally improved.
"You can radically change stability with just camber changes."
Unfortunately this is only partial usable when kite is depowered. Kite is then at the edge of the wind window, bar is sheeted out. This is the situation when kites stability is really tested. Kite then flies mainly by its A row, and if you try to decrease camber by distorting airfoil (tightening B-C) you lose some depower, because it also increases AoA between A to B-C. Also bar pressure increases.