I hate Yaaay's font, I really do, it's terrible.
I'm by no means a Zelda expert, but I feel like there's been some misinformation spread.
Zelda's usmash is very good (for the most part) and I'm fairly certain it doesn't lack horizontal range to any significant degree. If anyone would like to prove/disprove what I'm saying with a hitbox diagram (Aerodrome, I hope you namesearch), feel free to do so. I couldn't find one.
(Taken directly from the Zelda guide on the boards)
[COLLAPSE="Up Smash Viability List by Fuujin"]Up Smash Viability List
These characters can easily escape Zelda's Up smash with DI.
Marth
Lucas
Ness
These characters can escape Zelda's UP smash most of the time with DI.
Pit
Diddy Kong
Samus
Lucario
Ice Climber(single)
These characters are unlikely to escape Zelda's Up smash, even with DI.
Bowser
Captain Falcon
Donkey Kong
Falco
Fox
Ganondorf
Ike
Jigglypuff
King Dedede
Kirby
Link
Meta Knight
Mr. Game & Watch
Olimar
Pikachu
Pit
Pokémon Trainer
R.O.B.
Zero Suit Samus
Snake
Sonic
Toon Link
Wario
Wolf
Zelda
Yoshi
Sheik
Peach
Luigi
Mario
[/COLLAPSE]
It works on a good chunk of the cast.
Dtilt and dsmash are also very good. These 2 and usmash are probably her best moves.
Her dash attack, jab, Nayru's Love and Din's Fire are all good for different things but certainly aren't on the level of usmash/dsmash/dtilt.
Aerials are (outside of nair) terrifyingly strong, however they're all very unsafe on shield, situational and telegraphed.
Her main problem is that she can't approach, due to
-Pretty bad mobility
-All of her attacks are terrible on shield and have terrible range
-Has one of the worst grabs in the game (horrible startup, horrible range, good chunk of cooldown)
She also lacks strong OoS options, has bad recovery, has a terrible air game and gets juggled easily, can be camped and walled out easily...that's all I know.