I'm not anti-Toad but can see why someone would be. Waluigi is by far the worst choice, though.
Personally, I want Impa as a way to keep Sheik's moveset with the irrelevant character.
Can we compromise and pick literally anyone else from Xenoblade 2? Rex is just so generic in both fighting style and personality.
A terraforming moveset would have to be handled very carefully and should only be given to a character who truly warrants it *cough*Doshin*cough*. Also, I agree. The Villager's moveset reps the games more than the character, making a second AC rep a weird choice.
No character should be in Smash who couldn't believably be an amiibo. It is series cannon that the fighters are all figurines and Ridley would be WAAAAY to fragile if scaled down. His actual size is irrelevant compared to his gangliness.
Would you and
Mewtader
be happy with him as a stage, perhaps. Similar to Lylat Cruise but on an angry Ridley flying down the lava tubes?