There is always room for improvements in any kit, including the dc4 le, as red line has pointed out... I also would like a thinner chassis, which can be solved with a dremel, but would rather buy such an option instead of hacking the present chassis... The car can always use the Hobao/T4 short shocks and another hacked shocktower, but racers would rather purchase one than.....well you get the picture.... The same goes for the dcj's....