A quick Brawl+ move analysis (might make this a thread later and put in all moves, it's too late tonight):
Dair: I agree that it's a terrible move due to the startup lag, but when used as a mix-up on a grounded enemy, it provides a high amount of hitstun and combos easily into fair (Which should be buffed soon I hope). Probably what I hate the most about this attack is the telegraphed motion it has, if it was just a lingering hitbox like it was in melee, I think it would be a little better, but also like our Nair. What do you guys think?
Fair: I would greatly like this to be our killing move, it is great for edgeguarding, spacing (although I prefer bair myself against grounded opponents), punishing etc. Combos easily out of utilt, dtilt, ftilt, nair, throws... pretty much everything. Also, Fair combos into... Fair. just like it did in Brawl... only easier. Also with increased gravity and hitstun, you can SH Fair->Ftilt (or any ground move) then follow up with another Fair or anything. It's great for setups, and in Brawl+ it usually hits below a 180 degree trajectory which allows this combo with ground moves quite readily.
Nair: Great for punishing spotdodges due to it being a Sex kick. Great for pressuring shields, and goes great when you jab after a weak Nair due to sheildstun, and also is usually faster than any of the opponents responses. I hardly use this to KO in B+ although it is possible at... 130-140% probably.
Uair: I'm not really a fan... Sometimes I jump->Uair->second jump->Uair for quick % but usually I like stringing Fair. Eh, I never really was a fan of it in Brawl either... so maybe I'm biased.
Our grab game: Is great, but I wish we had a techchase throw like Sheik's Dthrow in Melee. I know that it was freakin' cheap, but I think it should be incorporated if possible into her game. (This can be done by having a set downward knockback... Sheik's current Dthrow has a %-dependant knockback, and probably can be made to be like G&W's.)
Extra:
Also, I've been working with needle combos. Guess what guys? AERIAL NEEDLE STORM AUTOCANCELS ON GROUND! :D :D :D
The only bad thing is, I think they turned down projectile hitstun as a whole to deal with Pit's arrows, rob's laser, etc and I think these needles have suffered too, but I believe if you use the now-2 frame buffering window to buffer the input of a ground attack (most preferably jab or Ftilt) it will be a true combo. Just throwing that out there.
Btw I play Sheik, Falco, Marth, and Captain Falcon in B+. If you want any help or advice, just contact me on AIM or PM.
Hope this helps, informes, or whatever. Let B+ reign! xD
"Fair boost, not Nair" if you boost fair then you either lose your easily set up combos with fair or lose it as a tool for killing. Unless the brawl+ scene is going to remove decay the nair is the better choice as it's not as commonly used by sheik gameplay.
Oh, and Tristan, the codeset I'm using has no knockback decay/stale move degradation. I think that Weak Nair is an extremely useful tool. Also, at mid-%'s a Strong Nair sends the enemy at a sharp horizontal trajectory fast, and usually the enemy doesn't get the tech, allowing us to follow up. Idk, I agree that stringing Fairs is an essential part to Sheik's game, but I see the need for one extra killing move without taking away the cool stuff that Nair does for Sheik already.
I admit that I may be totally and completely wrong, but I WANT a codeset to test with Sheik's Fair buffed, and Sheik's Nair buffed SEPARATELY so I can actually make an educated decision about this matter, and not having to delve into the theory of it. I believe that you will agree that until this happens, no clear decision can be made.