It would be nice to have a copy of mode 1 and 2 (the sine waves), but inverted. Much like how The snap waveforms (7 and 8) are with 14 and 15.
Another waveform that would be useful is a ‘wave function’
The illustration is from audio engineering. In audio eq, the narrowness of the wave figure is called “Q” (no relation to cues in lighting). Having either a wave function that you could control the Q factor, or a few different ones of differing narrowness, and going both upwards and downwards would be totally dope.
Another waveform that would be real handy is … random! Or pseudo random. Sometimes you just don’t want it to look like a repeating pattern.