The following is a list of characters that I'd really like to see in Smash, not so fussed about what other people think, though I'll admit that these are real long-shots, especially given their lack of popularity in Japan.
Ratchet and Clank
Yes, I'm a big fan and there's probably no way that Sony will be up for "loaning" the characters to Nintendo for any reason but, hear me out on this one. Insomniac games clearly don't care about the Ratchet & Clank series anymore with the crappy reboot being the last thing done, so porting the characters to Smash would be a quick and easy way to keep an income from the IP. A few cents from every Nintendo eStore download and Amiibo sale would add up quickly and maybe enough to give us a satisfying end to the Future series at some stage. Hey, this is a Wish List after all.
Technically a classic SNES-era character in his own right, Earthworm Jim has always been a lot of fun in how he plays and move and I'd feel that it would translate well to Smash. Blasting with his ray gun, swinging on his own earthworm body like a rope and using Snot as a parachute would all fit the ethos of Smash perfectly. A Final Smash were Jim pulls out the Barn Blaster and clears the screen would fit nicely too. He probably doesn't need to bring Peter Puppy, PsyCrow or Professor Monkey for a Head with him as playable characters, but assist trophies would be fun to see.
I actually really enjoy the original A Boy and his Blob, despite its many flaws, having finished it more than once on emulator. The difficulty and awkwardness of the game is offset for me by the unique ideas and atmosphere provided. I'm yet to play the Wii version because I can't find a copy, but I'm happy to see the characters back for a new generation to discover. For those not in the know, the Blob is able to transform its shape into almost anything when given the right flavour of jellybean by the Boy and now you're probably getting an idea of how cool these two would be in Smash. Have one of the Fighter Stances be a hug and the Final Smash is feeding Blob a grape jellybean to make him into the Giant.
Essentially everyone my age has played more than a few hours of Goldeneye on N64, due to the issues around licensed games we never got a true sequel, but I always felt Perfect Dark was underrated. (I also like Rogue Agent, but mainly for the insane setting and Bond fan-baiting) The secret agent protagonist, Joanna Dark is a fun mix of Lara Croft and Solid Snake with a great variety of weapons and equipment, including guns that shoot through walls and temporary invisibility. Although she may not be the most iconic characters in video game history, Joanna Dark is probably the closest my generation will get to connecting with all those hours spent playing Goldeneye in Smash.
Sorry to say, but I have a few more of these in me yet, stay tuned.