I kind of did buy the motherload a year and a half ago, worring a bit about this issue. It worked good for me at the time to carry lots of capacity to the track, rather than depend on a fast charger working. Well, that was my excuse anyway.
But the reality is, lithium batteries are not going away. But you might end up paying more in the future for properly packaged and labeled shipping. Though cheap, "it's a gift" shipping is nice, I don't like getting "that look" from my mailman either.
What I really want to see, is a nice selection of turnigy and zippy batteries nice and cheap in my local walmart. Tons of shit in the walmart is hazmat, but doesn't cost you a ton to go buy it.
THE LIPO RULES. NEVER ABOVE 4.3V NEVER BELOW 2.7V DON'T PUNCTURE
Ideal charging /discharging range for Lipo, 3.65v minimum 4.1v maximum
See battery technology section, FAQ thread at the top of the page for lipo noob info.