it would be great if Scale1D (and 2D and 3D) could accept + or - distance as value after first reference point. I often need to scale things down with say 15.5mm and if the object is 373.43 long it can be tedious to do the math. Or make a line, turn on controlpoints, move one point 15.5mm and then use that as a snapping object and then delete it.
So I would really like Rhino to accept -15.5 as input.
Same goes for +15.5 of course, to make it 15.5 longer. And 1/7 to make it 1/7 the length would also be great, since pulling up the calculator to figure out that 1/7 is 0,1428571428571429 and then copy and paste that is tedious too. Multiplying is easy though, but it would be nice if *7 could be added for coherency for the users though.