!! yes !!
It's also difficult to start fresh and build your own sets.
All of their stock kits have a ton of EQ, settings, trims, whatevers.
Only real option is to use an existing set as a template to build your own.
That stuff aside, Spark does something incredibly fantastic...
The fact that you don't have to save. When you close ableton, and open it back up, everything is right where you left it.
Other workflow gripes...
It probably exists, but is not immediately obvious how to copy one pattern to another when your hands are on the hardware.
It would also be nice to have a 'dump' button that pushes all MIDI patterns for your current set (A1-A16) to the Ableton strip.
Similarly, I have to ensure I never have data in pattern 1 so i can do playback without data 'adding' to the mix.
The 707, Studio Drums, 80's and Jazz kits are killer. The rest of them can basically die.