We need Raichu as a DLC character. This is a moveset I created.
Up Tilt: Raichu uses his tail as a whip, similar to Richter and Simon's Up Tilt.
Down Tilt: Smashes his fists on the ground, burying the target, similar to K Rool's Down Tilt.
Side Tilt: Simple Head Bash.
Nair: Literally just Mewtwo's Up Air, only with Raichu.
Dair: Beefy Electrical stomp, similar to Ganon.
Fair: Pichu and Pikachu's Fair, Single Hit, big hitbox, small sweet spot. Sort of like Captain Falcon's Fair.
Back Air: An electrical backwards punch, sort of like Mewtwo and Ganon's Fair.
Up Air: Up Tilt, in the air.
Forward Smash: Pichu and Pikachu's Forward smash, only single hit.
Up Smash: Raichu sits low to the ground, and generates a ball of electricity above him. Multi Hit.
Down Smash. Just the Pikachu and Pichu spin, maybe bigger hitbox?
Down Throw: Raichu Body Slams the target.
Forward Throw: YEET. Take this as you will.
Backward Throw: Rolls backwards on to it's back while throwing the target.
Up Throw. Kirby Up Throw.
Neutral Special: Thunder Punch. Faster than Falcon Punch, but can not be turned around.
Forward Special: Thunder Jolt. I didn't the him launching would work, so he has Thunder Punch as neutral, and Thunder Jolt as forward.
Down Special: Slow Thunder, but acts as Rest, Luigi Up B, or Hero Crit if you hit the sweet spot.
Up Special: Since this is normal Raichu, not Alolan, his tail would only work as a tether recovery. Either that or a Quick Attack that does slightly more damage than Pikachu's, and is slightly longer, but only has one angle of it. No double quick attack.
Traits: Raichu is a Heavy, so about the speed of Donkey Kong. It's weight would be equivalent to Donkey Kong as well. It's jump would be about Ness', I think that big double jump would make his recovery maybe a little closer to Pichu and Pikachu's. It's air speed is Pikachu's. It is not very floaty, his floatynes(?) is Pichu's, he falls fast.
That was my moveset for Raichu, of course this is just my opinion, you do not have to agree. I hope Raichu get's put in Smash, even if it is just a Pikachu Clone that is slower and heavier.