Count me in. The only Pokemon at this point that I support. I've already thought of a specials moveset:
Neutral: Toxic - Mimikyu spits a sludgy projectile that poisons opponent, doing gradual damage up to 9%.
Side: Sucker Punch - a counter where Mimikyu dashes forward like Fox/Falco's side special. If it comes in contact with a hitbox, the entire area where Mimikyu dashes through is covered in a hitbox that sends opponents flying. Has endlag, so can be punished if it doesn't counter. Also good for recovering to the ledge.
Up: Quick Attack - Since Mimikyu wants to emulate Pikachu, I thought it would be fitting to take one special from Pikachu. Works exactly like Pikachu's QA, but trades hitboxes for intangibility.
Down: Hone Claws - Mimikyu puts its hands together and it recieves a brief (10 sec) knockback boost to its moves, as well as a range boost to any normals that use its claws. Leaves Mimikyu vulnerable for a second, so use at a safe distance.
Final Smash: Let's Snuggle Forever - Mimikyu does a mid-range lunge forward, exposing its underside. If it grabs an opponent, it traps them beneath its disguise and pummels them for 30% before launching them away.
I picture Mimikyu having mostly headbutts, claw swipes, punches, and tail slaps as its normals, as well as a reverse Bowser Jr. gimmick with its disguise. If its underside is hit, it takes more percent than the rest of the cast and receives more knockback. If the disguise is hit, it takes less percent than the rest of the cast with less knockback. Its underside is completely covered while crouching. Mimikyu is quite fast and mobile, but has around G&W 's weight, so it can die pretty early.