when i first used down smash i thought it was crap. About 1 week and a half ago i found out that it is very fast and useful. A down smash is like a free combo. TIP: When a character is around 65-70% you can do 3 down smashes yes 3 and that is 33% right there. If you are fast enough you can up air them and that is an additional 11% for a total of 44% hit combo. Also against space animals you can do down smash 4 times starting at 0% and thats a total of 44% then you can do whatever you want. try it guys. If you guys want me to make a video i can.