I don't like the lightning. A critical feature of the original picture was that the allocation proportions were shown (might not be clear because it was a shitty picture). The lightning should be replaced with something that shows value transfer correctly, like have input/output arrow width be the right proportion or something. Also AGS/PTS bars shapes should represent their growth over time but that is less important.
Hmm, I get what you're saying, but I think the value of having a lightning bolt (or some other non-arrow symbol) is to show that it doesn't represent a diminishing of the originally held asset. You just said "value transfer", but that's not really what it is. It's the creation of new value, and the assignment of that value based on the existing state of something else. The use of arrows would make it look like something is flowing OUT of PTS and AGS, but that's not what's happening. AGS and PTS continue on, undiminished. (Which, AFAIK, is one of the main points of this chart; to show people that their PTS and AGS will not disappear once BTSXT is launched.)
In any case, I worked on it for a while, I did not feel that I could make the arrows convey the information properly. This is partially due to my limitations as a designer. I think I know what you mean (you see charts in magazines and such that show money flows like this: http://aleklett.files.wordpress.com/2012/11/figure-2-8-the-global-energy-system-2010.jpg
) but sometimes even fancier. I don't have the skills to do that and make it look good, and I believe there's probably some software better suited to that kind of chart than what I'm using here.
I think that the "50% PTS, 50% AGS" text clarifies the situation sufficiently (it's even pan-lingual); and even if I managed to get the arrows to all be sized proportionately, I think that it would still need to be explained somehow, since people see arrows and lines on a chart and don't necessarily assign meaning to their widths. Plus, now that I've played around with it some, I really think that replacing the bolts with arrows will lead to mis-interpretation.