Not all effects work well on every model. For example, Snowflakes are not the best choice for a house eve model.
So, I would like to suggest an autogenerator enable/disable selector for each effect. That way, before I ran an autogenerate, I could enable only the effects that I wanted the autogenerator to use. Then when I ran the autogenerate function, only the effects I enabled would be applied to the sequence.
Thanks,
Rick S