I don't see how they could be, you mean fill up wave 0x09 - 0x1F, right? With what, more waveform generated instruments? Pretty sure nobody knows how to go about doing that. I'm guessing it's programmed so the real instruments go on 0x20 - 0x2B at most, if someone could figure out how to broaden that to allow to go from 0x09 - 0x1F so they don't have to be called in the 32 byte instrument data, then that'd be pretty cool, but I mean there's probably a good reason why the real instruments that require blocks of space are needed to be called via that 32 byte data.
We are born, live, die and then do the same thing over again.