I looked through the posts and didn't see anything already posted with this suggestion but I apologize in advance if it's been suggested and I just missed it.

It would be very helpful to have precise positioning for objects. By this, I mean showing the x, y, z coordinates and be able to type in (spinner control maybe) to position the object at exact coordinates. Possibly doing the same thing for rotations.

this will be added in the future, for now you can use the "grid aligning", "align to grid" and "change grid size" options

when grid aligning is enabled then rotations are automatically performed by 45 deg steps

Is there any way to have arrows appear to drag the objects around? Arrows like in 3ds max/crysis sandbox and many other tools?
If not could you please add these (as an option).

Moving objects by holding the right mouse button and moving the mouse is somewhat strange and uncommon. I find it quite hard to move objects like that.

yeah i would imagine everyone agrees with this.

Could you implement this?

I slightly move mouse,object go with 2m.
This will be fixed?

you can adjust mouse speed in World Editor.txt
move speed depends on camera distance