It would be useful at times to run the plugin grabber through a selected track’s DSP chain before saving the resulting wave.
My logic is that the DSP’s are hugely powerful, but if an effect only needs to be applied once, that’s extra CPU that could be used elsewhere. Then the resulting instrument is usable as-is in other songs and OS platforms as well.
A secondary nice-to-have would be to prompt the user for the resulting bit-rate of the wave in addition to the bit-depth. I suspect that the current bit rate is limited to the plugin, so might not make sense unless you count post-DSP.