In my build in support for LeDWIZ in Atomic, i have introduced a FAD command that works almost like ultrageek proposition.
In animation script , you can add :
FDEL:50
FAD:<ledwiz number>,<val output1>,>,<val output2>,<val output3>,<val output..>,....,<val output32>
It will fad the current state of the outputs , to the ones you defined , waiting 50ms between each "frame".
Could be something you can do in your plugin.