I generally agree with this concern, although I think it's likely that it will become unimportant over time as formats congeal. I guess the mitigating factor i

I generally agree with this concern, although I think it's likely that it will become unimportant over time as formats congeal. I guess the mitigating factor is that at least it's readable and well-formatted as ASCII, so it's not that big of a deal if your format isn't supported anymore -- just read the source.