Should SSBU Get Fighters for the Series' with Only One?

The franchises with one fighter are Yoshi, F-Zero, Ice Climber, Game & Watch, Wario, Metal Gear, Sonic, Pikmin, R.O.B., Mega Man, Wii Fit, Punch Out!!, PAC-MAN, Duck Hunt, Bayonetta, and Splatoon. While I don't see Ice Climber, Game & Watch, R.O.B., Wii Fit, or Duck Hunt getting another fighter, some of the others definitely have some options.

Here are some of the more obvious ideas for new fighters.

Splatoon can get the Octolings(Echo).

PAC-MAN can get Mrs. PAC-MAN.

And Wario can get Ashley.

These series are going to be a little more difficult.

Yoshi can get Kamek or Shy Guy(maybe).

I don't play F-Zero, so this one I got for GameFAQs-Black Shadow(Echo).

I also don't play Metal Gear, and this one is from Reddit-The Boss

Sonic can get Tails, Knuckles, Shadow, or Eggman.

Pikmin can get Alph as his own fighter.

Mega Man can get one of the other "Mans" from his final smash.

Punch Out!! could get Doc Louis.

And Bayonetta could get Rodin.

I can see some of these actually happening, but not all of them. Tell me what you think of my list in the comments!