Yeah, it's kinda a shitty idea for a number of reasons, but it'd still be neat.
My bigger beef is why all OSes/distros don't just automount removable flash as sync, so there's never unflushed data in the kernel.
Who gives a shit about the "you pulled this out without ejecting it!" messages. I don't, and I know what's going on under the hood. I can't believe regular users give half a shit.