OK, this little thought is probably interesting to a very little party, but anyway...
As much as I enjoy my Spark VDM, I can't get the Simmons toms to sound enough SDS-V-like (more like the SDS-9 I have in a closet...). One thing I miss from the original is the "click drum" knob for that extra attack.
And, wouldn't it be cool if the clap sound could emulate the legendary Simmons Clap Trap?