While the focus is Fox, I would probably assume it would be more of a threat in the hands of Falco currently, or at least until we cap Falco's lasers.
With Fox it makes it continue to be an even better camper, now being able to have more flexibility on his lasers, which invoke an approach, which Fox is pretty good at punishing. The focus shifted to him because the user that requested it is a Fox main. We probably should've at a wider range, since this is going to be applied to both Fox and Falco.
With Falco I probably could see his approaches being better AND his camping. But I guess we have to see.
@ Rudra - No it wouldn't break him (just because someone said I said it's OP doesn't necessarily reflect the truth; on the Internet people have different perceptions on what words carry what connotations. I don't even recall how many people call others scrubs on Youtube and not know they're using it completely incorrectly).
However, it is buffing someone who "doesn't need it." This is pretty much the phrase they would use for characters like TL, Falco, Marth, etc., who could get some stuff, or a few small buffs to moves, but are dismissed because they're already "good enough" (and they are good enough).