The other reason i have waited is because Final Smash ideas can very quite a lot from person to person, meaning that i want a lot of feedback on this part. 

Mario: Mario Finale

Same as what already exists. He shoots a pair of intersecting fireballs across the screen. The NSMB Mega mushroom might be fun too

Luigi: Super opponent head-stomp

I thought what Luigi did for Brawl was too wierd. As such, i picked something i feel is more appropriate to the character. He continually bounces around the arena, and hitting an opponent means likely doom, but the user has to be careful not to miss the platforms...

Peach: Peach Blossom

Same as Brawl. She puts everyone to sleep talking about the new shoes she bought at koopa-mart and what Daisy was getting on the side, then eats a bunch of peaches and kills people

Bowser: Giga-Bowser

Same as Brawl. Bowser get's really big and spiny and starts stomping around the arena. I wonder how his son's would work.

Link: Full Triforce

I dont think that Links move in Brawl was epic enough, so i'm thinking, how about a final smash that allows Link to use the entirety of the Tri-Force? I have no idea what it would look like, but it would assuredly be awesome

Zelda:  Light Arrow

It's too perfect. 

Ganondorf: Ganon

Same as Brawl. It fits with him and isn't over or underpowered.

Vaati: Transformation

Vaati would obviously transform into his gigantic eye form, which i have to say, would be bad-ass in 3-d motion

Samus: Ship Flyover

I'd be satisfyed with her mega charge beam too, but the Ship Flyover makes more sense. also, maybe Phazon powers?

Ridley: Meta Ridley

This Final Smash would make Ridley hit harder and be much harder to bring down. Watching him melt in lava as a cutscene would be great

Fox: Great Fox Laser

There would be some complications since the Great Fox is also a level in SSB, but it'd be a great Final Smash

Falco: Arwing Support

Peppy and Slippy fly down to give Falco some cover fire

Wolf: Landmaster

Because only one of these characters should use the Landmaster

Krystal: Staff ground pound

Krystal shatters the ground with an epic jump and fall

Falcon: Blue Falcon

Same as brawl. That was an epic move. also, consider a game breaking Falcon Punch. 

Pikachu: Volt Tackle

I didn't like this one much, but i can't think of many good alternatives either

Mewtwo: Mind Control

Fly out of reach and control another player, either using him to attack other players or just dropping him off the edge.

Lucario: Aura Storm

Same as Brawl, though maybe slightly more powerful

Pokemon Trainer: Triple Finish

What are you going to do with a character that has such variety?

Kirby: Super Sucker

Kirby Sucks up all three opponents, and his attributes (speed, strength) match the best of each of them. So for example, a kirby with Bowsers strength and fox's speed.

Dedede: Waddle Dee Army

same as before, though more power would be good

Meta Knight: Galaxia Darkness

Same as Brawl, because i couldn't think of a good special attack for him

Knuckle Joe: Uppercut

Knuckle goes up to the  closest opponent and hits him square in the jaw

Kong: Kong Clap

Donkey Kong goes up to the nearest foe and hits them from both sides of the body. Ouch. Not to be confused with an inconvient disease

Diddy: Rocketbarrel Barrage

Same as Brawl. Diddy flies around shooting at people

Dixie: Rhino rampage

Dixie rides a Rhino across the stage, kicking ass

King K. Rool: Barrell drop

Barrels rain from the sky, exploding on impact

Ness: PK storm

Same as Brawl.

Lucas: PK Snake

Lucas' snake grows to an amazing size and crosses the arena, taking out anything in sight

???????

Marth: Critical Hit

Marth has an awesome final smash already

Ike: Great Ether

Same as Brawl: jumps up in the air and hits anyone unfortunate enough to be in his way

Lyn: Charge Slash

Lyn charges across the platform in one slash, critically damaging anyone in her way. 

Andy: Repair

Causes a modest amount of damage to the opposition while fully healing himself

Olimar: End of Day

Olimar Leaves in his space ship, leaving everyone below to fend for themselves. 

Pit: Goddess summon

Summons Palutenia to the arena, where she acts as a partner for a short amount of time

Ice Climbers: Snowfall

The arena becomes covered with snow, forcing other players to the ground at a greatly  reduced speed, allowing the Ice Climbers to hit them with strong smashes

Animal Crossing
Nook: Bill Pay

Everyone's percentage skyrockets except for Nooks (perhaps depending on how much damage they have done?), whose percentage goes down

Agents: Save the World!

Calamaties appear all over the stage(volcanos, car accidents), harming the opposition, and the Agents go to each spot and dance, also harming the opposition

Yoshi: Super Dragon

Same as Brawl. He flies around on his wings shooting fire at enemies

Felix: Catastrophy/Iris

Felix would summon Catastrophy to lay devastation to his foes, or summon Iris a certain low percentage of attempts. Iris is even more powerfuil, and heals Felix

Or he could just summon Reggie to announce Golden Sun DS

Wario: Wario-man

Same as Brawl. Runs around in a silly costume

Akari: Runaway boarder

Much like Falcons Smash, Akari would jump on her board and hit an unlucky player

Mac: Heavy Combo

Mac comes in for a few gut punches, then finishes it off with a good left hook to the jaw

Saki: Slash n Shoot combo

Saki hits one opponent with his blade, then proceeds to shoot at the remaining enemies ala Snakes final smash

Game and Watch: Octopus

Same as Brawl

Ray: Overload

Ray fires all weapons at once

Fighter: Bird reign

A flock of Balloon Fighter Birds would come from the heavens and knock into opposing players, sending them flying