Hmmm I Have A Lot Of Speculations So I'll Start Off With Stages...
Stages
~ Gerudo Valley
~ Luigi's Mansion
~ Speed Highway
~ City Escape (Moving)
~ Delfino Plaza
~ The Great Deku Tree
~ Lumiose City Gym
~ Silph Company (Top Like SSB64)
~ Donut Plains (Kirby Canvas Curse I Believe)
~ Plain Fields (Kirby Squeak Squad)
~ Mario Circuit (Custom)
~ Rainbow Road (Mario Kart 7) [Similar To Sm4sh Rainbow Road]
~ Skyworld V2 (Custom)
~ Palutena's Temple (Mini)
~ Tails' Lab
~ Angel Island (Moving)
~ Super Mario Bros (Moving) [ Just Like SSBB]
Characters
~Luigi
~Rosalina
~Shadow
~Knuckles
~Ike
~Pit
~Bowser Jr
~Waluigi
~Sasuke
~Vegeta
~Toon Link
~Ganandorf
~Falco
~Lucario
~Mewtwo
~King Dedede
~Crono
~Blade
~Rukia (Inside Joke)
~Lucas
~Daisy
~White Mage
Modes
~ Classic (Uh-Duh!) [Already Announced]
~ Co-Op Modes
~ Arena (Uh-Duh!) [Already Announced]
~ More Stadium Modes
~ Trophy Raid (Custom)
~ Trivia
~ Giga Mode (Custom)
Welp Uhm I Think That's It For Now Im Sorry If It's Too Much...But Theese Are All My Current Specuation For The Final Super Smash Flash 2 Release...

There's a topic for character speculation :
http://forums.mcleodgaming.com/viewtopic.php?f=96&t=39274

I would love to have the Deku Tree as a stage.

It Would Be A Great Stage!

I Know But It Does Say General Speculation And Wouldnt That Count As General Speculation As Well...

This is the place where you're supossed to speculate stuff except characters.
Also, Vegeta was cut from the roster in version 0.7

Oh...

This needs to happen.

I would like to see alternate forms for stages, like Green Hill Zone/ Windy Hill Zone, Mushroom Kingdom 3/ Mushroom Kingdom 2, New Final Destination/ Old Final Destination, etc. Like a less boring version of Omega Mode.

I speculated that in last page

oops
but i guess that just proves how much we want it

speculating metal mode.

I speculate an FPS counter.

Hmm this would be cool to see and they have had project M reference before like with dracula's castle and turbo mode so I could see it happen but who knows we do already have a hazard switch. Something that I would like to spec and see as a Project m reference is when hazard switch Is turned off some stages have a change in look like pokemon Collosseum getting a purple look with a masterball in the middle instead of a pokeball and Castle Siege getting its blue look.

I'm just putting this out here. If the release date for Super Smash Flash 2 was on the same date that Windows 10 has been released to the public, that would probably be a bad idea based on compatibility settings.