You can always luigify anyone, no matter how similar the characters can be, the whole point of Semi-cloning is to differenciate the characters from each other.
Thats the reason why the "too similar" argument is useless here

I know anime characters aren't gonna make it in, but just for giggles, what anime characters could be cool?

I have an idea for Sasuke that takes his personality from the show and makes it part of his moveset. It makes sense for Naruto to be a rush down character because he's never gives up until he's beaten you or changed or your mind. Well, Sasuke should be heavily based on spacing and not letting your opponent in just like in the show where he pushes away his friends to be "stronger". For example, his side special could be Amatseratsu where he puts wall of black fire in front of him in exchange for being a little weaker for a while like making him jump lower and overall move slower. The flames would burn him if he touches it, and he can't do it in the air. This could be really good for edgeguarding at the ledge, but is not very good against high recoveries, so it's definetly a commitment. His down special would be Chidori Stream which would be similar to PK Thunder, but it would have a longer tail and a bigger but slower hitbox. It cannot be used in the air, and if you only hold down you'll create a electric current around you for protection. His neutral special would be Fire Style, where he can use the various fire jutsu depending on how much he charges it like Naruto with the Rasengan and how it becomes Rasenshruiken at max. His forward smash would work like this too; his max charge would be Chidori, but weak charge would be a simple electric palm strike. His moveset would generally incorporate electricity. His strongest sword attacks would be powered by electricity and his nair could be a Mewtwo style nair. His weaknesses would be his inability to kill without edgeguarding and characters that are good at getting in your face even despite his fast running speed. Whooh! Sorry for the wall of text.

I would like to see Dr Mario(with a more unique moveset),Mewtwo, Ganondorf, Pacman,and....Egg Man? Shantae? Shovel Knight? WALUIGI!? SIMON BELMONT!!?? Luffy? GOJIRA(I know it sounds silly but he has been in nintendo consoles,he has nuclear breath, drop kicks, claws, teeth, lightning rod on his back and tail for combat, His final smash can be the red spiral ray or burning godzilla)!!!!???

Who is Gojira? By the way, I do speculate everybody on your list to be in the game as well except for Shovel Knight because he came in way after the roster was finalized, which was in January or February 2013. Although he would be awesome to play as!

And will they ever add Sasuke with his susanoo move set and rinnegan?

[ Image ]

I don't think we're going to get Knuckles or Shadow in this game. Maybe Knuckles but not Shadow

Can't we have an Smash Fangame without a bunch of Sonic Characters?

I think it will be the other way around. I think we will get Shadow, but not Knuckles. Although, we could get both.

I think it will be the other way around. I think we will get Shadow, but not Knuckles. Although, we could get both.