I submitted an idea to the idea station and it immediately got flagged as spam. Go figure.
You can see it here Add Numerical Speed Control and Higher Step Count for Motion Studies .
If you want a link to the idea station here you go: Autodesk Idea Station
I don't know how much they actually use that, but I'd say to whichever users are reading this and as frustrated with all of us, take a crack at submitting the idea or voting for a past one.
I agree, while I have also done a blender work around for this, the overhead even if you know what you are doing is a pain. Motion studies in fusion are seriously not far from where they need to be if they just added the 3 or 4 extra features we've been begging for here. I want the feature badly enough that I'd volunteer to do it for them for free if they let me into the back end since I have a software eng background XD
All that said. I'm not optimistic anything is going to happen in my lifetime since I don't see any financial incentives for them to fix this - big businesses tend to have a myopic world view with mildly popular products in their portfolio. After all, we are all still using fusion at the end of the day.