Could you expand on that? I use SH nair a lot x_x
Okay!
SH Nair is a pretty sweet tool. It combines Fox's speed with a solid hitbox that comes out quickly, stays out, and doesn't have terrible lag. The drawback to this awesome tool is that it can be CC'd into a strong punish unless the move is used stupidly close to the ground, voiding part of its luxury in that it's a constant hitbox. And unless Fox is really tricking someone with his speed, then his SH Nair is pretty easy to outrange, especially if he has to be extremely close before using it. This is also not taking into account the fact that most Foxes SH Nair all of the time, so everyone baits it like mad and DD grabs Fox for it if they don't feel like CC'ing it lol.
So you have to use other tools to make people stop playing only to wreck your Nair(hello M2K). Lasers are an okay start, but if you have to attack eventually then people will be ready for your attack of choice all the same.
I talked about this some in the Marth boards like a day or two ago, but if Fox begins poking with Bair(specifically FH/DJ/platform Bair) and adding in more dash grabs with the occasional upsmash he'd be doing really well.
Running shine is also underused but it beats DD grabs and you can WD out of it so that's freaking sick because you can go any direction or stay in place out of it after throwing out an invincible hitbox.....why aren't people doing that more?
I could go on but seriously....stop SH Nair'ing all of the time Foxes! Good option yes, but far from spammable option in this metagame.