Blackshadow
Smash Ace
I don't know if anyone has discussed this (hell, I never visit the Falco boards) but w/e. Considering Fox doesn't fall down from Falco's downthrow in NTSC, I find that it's possible to play a little mix-up game involving said throw and back throw. DI-ing in to shine stops Falco from downthrowing again, right? And backthrow can be escaped by DI-ing out. So the possibilities are...
Falco downthrows:
If Fox DI's in, you get shined.
If Fox DI's out, you get another grab.
Falco backthrows:
If Fox DI's in, you get another grab.
If Fox DI's out, he escapes.
So it should be possible to mix up your grab game so that whenever the Fox expects you to backthrow, you downthrow and he DI's into your grab, and vice versa until you decide to finish the chain with a dsmash or fsmash.
Falco downthrows:
If Fox DI's in, you get shined.
If Fox DI's out, you get another grab.
Falco backthrows:
If Fox DI's in, you get another grab.
If Fox DI's out, he escapes.
So it should be possible to mix up your grab game so that whenever the Fox expects you to backthrow, you downthrow and he DI's into your grab, and vice versa until you decide to finish the chain with a dsmash or fsmash.