I've combed through data and found that certain aerials benefit from waiting until their landing lag window is over. Here are two differentiating examples:
ZSS - nair
Landing Lag Window: 4 - 41
Landing Lag - 10
Last Hitbox Frame - 16
For ZSS, it's best to hit with nair and land ASAP. A frame-perfect version of that would have her landing on frame 16, incurring 10 frames of landing lag, and being free to move on frame 26. If she waited, she would wait until frame 42, incur fast fall landing frames (four, two if you are not fast falling) and be free to move on frame 46.
Fast Landing - Frame 26
Delayed Landing - Frame 46
This is the case for many moves. However, some play out like this...
Sheik - fair
Landing Lag Window: 5 - 10
Landing Lag - 10
Last Hitbox Frame - 7
For Sheik, landing just after the hitboxes are out looks like this: land on frame 7, incur 10 frames of landing lag, and be free to act on frame 17. However... if she waits until her landing lag window is over, it looks like this: land on frame 8, incur 4 frames of fast fall landing lag, and be free to act on frame 12.
Fast Landing - Frame 17
Delayed Landing - Frame 12
Which is... obnoxious. Sheik doing this to people on shield means that any OoS option that's 4 frames or shorter are invalidated (some shield stun/shield lock frame shenanigans apply). And that is, in fairness, assuming perfect play on both player's part.
SO!
I've been told that this is week 1 Sheik stuff, but I couldn't shake that this could be looked at further. So I parsed out every character's aerials based on sixriver's data [
REF 1] and found that somewhere on the order of 106 aerials fit this bill. Granted, some fit numerically but do not fit practically. ZSS' dair is a good example. Technically it has a "landing lag window" but really, an attack forms at her landing and she incurs the... half second (ish) lag anyways.
This was done before the patch though, so I have to wait on another data dump. sixriver seems to have added the DLC characters to his (her? I don't know this person) database, so it may be updated. If I can confirm that or get a dump from @
Thinkaman I can re-do this number crunch and post it, if people are interested.