humble
Smash Ace
Why is his camping game one of the best? His grenades are on a timer, when he pulls one out you start counting; everytime, it explodes predictably at the same time. That means that you are capable of spot dodging/air dodging/ just moving away from them every single time. If he cooks it, it doesn't change the time left, and he can't do anything but hope you can't count to 3.His camping game is one of the best. It easily leads to stage control when adding in C4 and Landmine. He can duck under a bunch of projectiles, grenade shielding, grenade stripping, cooking them, various ways to throw them, ect.
Nair is good for coming down from up high. It will end right before he hits the ground, projecting him the whole way. And there are ways to use his aerials without landing lag.
Missle > Din's Fire. Less predicable, more movement, more control over all, can be used for edgeguarding decently, ect.
I think you need to look into how good Snakes play more.
C4 is predictable as well. How many frames does it take snake to actually explode it? Enough that you can see him try and dodge it. For the landmine, if you have projectiles like ICs iceblocks or Pit's arrows, you can explode it safely. Keep aware of its location and you should be fine.
Nair from high means the whole way you are throwing out an attack hoping they run into it or are scared and run away. If you get under Snake then you can just juggle him with ease, or just come from the other side of him as well.
I didn't mention his missile at all- I said his grenade was more predictable then Din's fire because it is on a timer.