It's kind of frustrating to me that Fusion doesn't (yet :>) support incrementing/decrementing numeric values with the up/down keys (and the position of the object being updated after each keypress).
Screenshot below should show what I mean. 😉
There is an archived old request for a similar feature here:
http://forums.autodesk.com/t5/fusion-360-ideastation-request-a/change-numeric-input-with-arrow-keys/...
In that Idea though, it seemed the OP wanted a pop up window or something. That's not what this Idea is for... I just want all the existing numeric fields accepting up/down keys for changing the value. Using a mouse wheel to scroll them up/down faster would be useful for mouse users too.