Hi Sefa,
Indeed, if you select multiple values that doesn't work.
However, I've grown accustomed to the specific way of working with the Key Graph Editor.
Also in my opinion it's also not possible to copy the object together with all of it's keyframes, since keyframes are part of the Animation Controllers and not of the objects.
However I will admit that there is a big issue when you need to create the same animation on multiple objects. I've been in favour of a simpler way of copying an animation controller across multiple objects.
Now creating multiple AnimationControllers and switching back and forth between two Animation Controllers to copy the keyframes is a seriously annoying task.
In most cases you could use Stagger Animations for it but that can make your Scene Director quite complicated.
And as for the arrows, I don't see any difference in using the arrows in stead of the + or - for changing values :-)
Most of the times I'm typing them in directly anyway.
Best regards,
Kenneth
#XPression