#66 is a good concept, but visually the symmetric is not really right....can you fix it? Make it like a ribbon being folded 4 times with the square void sit right at the centre of the logo...
#80 Can you please fold the ribbon clock-wise instead of anti-clockwise; and try to use one colour (try either green or orange) with grey to see how it looks like - put the grey on the arrow on the left and bright colour on the right arrow.... maybe it will look better