Yes, I've seen this done with a Witch outfit. But you can not have two different finales for the same outfit with different voices, unfortunatelly.
The is correct. The sounds can be customized down to the outfit level, but not down to the finale level. I might make it more granular in the future.
Yes, that would be great.
Per finale customization, plus the option to opt for a specific finale to not have voices.
Well I ended up needing that too for the new Christmas finales, so good news! You will get the ability to filter out specific moaning sounds in the upcoming release.