I am quite sure you never worked with a modelling / animation software if you write such a comment. You need more than just recording coordinates. You also have to interpolate between keyframes and sometimes you have to edit some adjustments.

I have no problem when some users like you want to program everything themselves. You can do it. Please show me the results. Maybe some other users want to buy it.

By the way: It is not very prudent if everyone invents the weel again and again (except for learning purposes but not if you want to make a game).
Some other just want to be more productive.

So let us talk about the topic: "next gen workflow".
I am really sure that you missed this topic a bit since "programming everything myself" is far away from being a good workflow