I knew a bit from afar (animation doesn't interest me much, especially in DAZ) but it's always good to learn more, thanks.
I think you're trying to do something that 99.99% of DAZ users will never use, I'd be surprised if an add-on or something native to the software ever comes along. Unless the devs make the choice to orient the software towards animation.
I don't know what kind of animation you want to do but maybe you could use Cascadeur, it seems easier than for Daz.